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CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6289

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out r More

CAPE CANAVERAL, Fla. -- Viewed from the Launch Pad 39A flame trench, crawler-transporter No. 2 moves under a space shuttle era mobile launcher platform at NASA's Kennedy Space Center in Florida. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6273

CAPE CANAVERAL, Fla. -- Viewed from the Launch Pad 39A flame trench, crawler-transporter No. 2 moves under a space shuttle era mobile launcher platform at NASA's Kennedy Space Center in Florida. The activity wa More

CAPE CANAVERAL, Fla. -- Florida's Lt. Gov. Jennifer Carroll, left, and NASA Commercial Crew Program Manager Ed Mango shake hands at the National Space Club Florida Committee's August luncheon at the Radisson Resort at the Port in Cape Canaveral, Fla. Mango was the event's guest speaker, discussing the innovative steps the agency is taking with industry partners to develop the next U.S. space transportation capability to and from low Earth orbit, which will eventually be available for use by the U.S. government and other commercial customers. To learn more about the Commercial Crew Program, visit www.nasa.gov/commercialcrew. Photo credit: Kim Shiflett NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-4404

CAPE CANAVERAL, Fla. -- Florida's Lt. Gov. Jennifer Carroll, left, and NASA Commercial Crew Program Manager Ed Mango shake hands at the National Space Club Florida Committee's August luncheon at the Radisson Re More

CAPE CANAVERAL, Fla. -- The team that has been modifying crawler-transporter No. 2 inside high bay 2 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida gathered prior to a test drive. The crawler-transporter has been undergoing modifications in preparation to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6166

CAPE CANAVERAL, Fla. -- The team that has been modifying crawler-transporter No. 2 inside high bay 2 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida gathered prior to a test drive. Th More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6168

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test drive i More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the mobile launcher is being prepared to support the space agency's Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6177

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the mobile launcher is being prepared to support the space agency's Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Gro More

CAPE CANAVERAL, Fla. -- United Space Alliance Project Manager Mike Parrish sits in the driver's position of crawler-transporter No. 2 which has been undergoing modifications inside high bay 2 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The upgrades are designed to ensure the crawler-transporter can carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6167

CAPE CANAVERAL, Fla. -- United Space Alliance Project Manager Mike Parrish sits in the driver's position of crawler-transporter No. 2 which has been undergoing modifications inside high bay 2 of the Vehicle Ass More

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building. With crawler-transporter modifications complete, the test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6169

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building. With crawl More

CAPE CANAVERAL, Fla. -- Technicians keep watch as crawler-transporter No. 2 moves along the crawler way at NASA's Kennedy Space Center in Florida. The crawler-transporter test dive is designed to check out recent modifications to ensure its ability to carry the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6173

CAPE CANAVERAL, Fla. -- Technicians keep watch as crawler-transporter No. 2 moves along the crawler way at NASA's Kennedy Space Center in Florida. The crawler-transporter test dive is designed to check out rece More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 has been undergoing modifications inside high bay 2 of the Vehicle Assembly Building in preparation to carry the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6163

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 has been undergoing modifications inside high bay 2 of the Vehicle Assembly Building in preparation to carry the spac More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6170

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test drive i More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 has been undergoing modifications in high bay 2 of the Vehicle Assembly Building. It has been undergoing a test drive checking out modifications to ensure its ability to carry launch vehicles to the launch pad. In the background is the mobile launcher being prepared to support the space agency's Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6178

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 has been undergoing modifications in high bay 2 of the Vehicle Assembly Building. It has been undergoing a test drive More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 is parked outside of the Vehicle Assembly Building. The Crawler-transporter has been undergoing modifications to ensure its ability to carry the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6176

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 is parked outside of the Vehicle Assembly Building. The Crawler-transporter has been undergoing modifications to ensu More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida the mobile launcher is being prepared to support the space agency's Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6179

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida the mobile launcher is being prepared to support the space agency's Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Grou More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6164

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test drive i More

CAPE CANAVERAL, Fla. -- Bill Couch, standing on the left, and Gary Milbourne, both of United Space Alliance monitor the updated controls of crawler-transporter No. 2 as it moves out of high bay 2 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The test drive is designed to check out recent modifications and upgrades to ensure its capability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6165

CAPE CANAVERAL, Fla. -- Bill Couch, standing on the left, and Gary Milbourne, both of United Space Alliance monitor the updated controls of crawler-transporter No. 2 as it moves out of high bay 2 of the Vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a space shuttle era mobile launcher platform, on the left, sits on pedestals outside the Vehicle Assembly Building. To the right is the mobile launcher that will support the space agency's Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6175

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a space shuttle era mobile launcher platform, on the left, sits on pedestals outside the Vehicle Assembly Building. To the right is the mobile More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test dive is designed to check out modifications to ensure its ability to carry the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6171

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building where it has been undergoing modifications. The test dive is More

CAPE CANAVERAL, Fla. -- As crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, technicians keep watch. The crawler-transporter test drive is designed to check out recent modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6172

CAPE CANAVERAL, Fla. -- As crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, technicians keep watch. The crawler-transporter test driv More

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building. With crawler-transporter modifications complete, the test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6174

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves out of high bay 2 of the Vehicle Assembly Building. With crawl More

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves toward Launch Pad 39A. With crawler-transporter modifications complete, the test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6180

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves toward Launch Pad 39A. With crawler-transporter modifications More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a tractor levels out the gravel after the six-million-pound crawler-transporter passed by on its way from the Vehicle Assembly Building to Launch Pad 39A. The test drive is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Ben Smegelsky KSC-2012-6200

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a tractor levels out the gravel after the six-million-pound crawler-transporter passed by on its way from the Vehicle Assembly Building to Laun More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves away from the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6184

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves away from the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Ben Smegelsky KSC-2012-6199

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves away from the Vehicle Assembly Building where it has been undergoing modifications. The test dive is designed to check out modifications to ensure its ability to carry the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6182

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves away from the Vehicle Assembly Building where it has been undergoing modifications. The test dive is designed t More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the crawler way toward Launch Pad 39A following modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6185

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the crawler way toward Launch Pad 39A following modifications to ensure its ability to carry launch vehic More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 has been undergoing modifications in high bay 2 of the Vehicle Assembly Building. It has been undergoing a test drive checking out modifications to ensure its ability to carry the space agency's Space Launch System heavy-lift rocket to the launch pad. In the background is the mobile launcher being prepared to support launch vehicles such as space agency's the Space Launch System heavy-lift rocket and Orion spacecraft. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6183

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 has been undergoing modifications in high bay 2 of the Vehicle Assembly Building. It has been undergoing a test drive More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Ben Smegelsky KSC-2012-6201

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves past the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed to check out modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the launch pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6181

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves past the Vehicle Assembly Building where it has been undergoing modifications. The test drive is designed to ch More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles projects to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Ben Smegelsky KSC-2012-6198

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6208

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6206

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6205

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6203

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6202

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6211

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6214

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6209

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6212

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6213

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6210

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6204

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each the size of a baseball infield and powered by locomotive and large electrical power generator engines, the crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Dimitri Gerondidakis KSC-2012-6207

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 arrives at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicle More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a technician monitors operations as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform over a support pedestal at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6288

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a technician monitors operations as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform over a support pedestal at Lau More

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 approaches. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6267

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 approaches. The activity was part of More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way. The crawler-transporter is undergoing testing at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6261

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way. The crawler-transporter is undergoing testing at Launch Pad 39A to check out rece More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves up the gravel crawler way at Launch Pad 39A. The crawler-transporter is undergoing testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6264

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves up the gravel crawler way at Launch Pad 39A. The crawler-transporter is undergoing testing to check out recentl More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6275

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out r More

CAPE CANAVERAL, Fla. -- Technicians monitor progress as crawler-transporter No. 2 lifts a space shuttle era mobile launcher platform at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The crawler-transporter is undergoing testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6274

CAPE CANAVERAL, Fla. -- Technicians monitor progress as crawler-transporter No. 2 lifts a space shuttle era mobile launcher platform at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The crawler-tran More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a technician monitors operations as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform over a support pedestal at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6287

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a technician monitors operations as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform over a support pedestal at Lau More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6280

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out r More

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6282

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A More

CAPE CANAVERAL, Fla. -- A technician monitors operations as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform down the gravel crawler way at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6279

CAPE CANAVERAL, Fla. -- A technician monitors operations as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform down the gravel crawler way at Launch Pad 39A at NASA's Kennedy Space Cen More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves up the gravel crawler way at Launch Pad 39A. The crawler-transporter is undergoing testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6265

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves up the gravel crawler way at Launch Pad 39A. The crawler-transporter is undergoing testing to check out recentl More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform down the gravel crawler way at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6283

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform down the gravel crawler way at Launch Pad 39A. The activity was pa More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under a space shuttle era mobile launcher platform on Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6271

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under a space shuttle era mobile launcher platform on Launch Pad 39A. The activity was part of testing to check More

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6270

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under. The activity was part o More

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 is undergoing testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6259

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 is undergoing testing at Launch Pad 39A. The activity is designed to More

CAPE CANAVERAL, Fla. -- In this wide-angle, panoramic view, crawler-transporter No. 2 is undergoing testing at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The activity is designed to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6258

CAPE CANAVERAL, Fla. -- In this wide-angle, panoramic view, crawler-transporter No. 2 is undergoing testing at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The activity is designed to check out rec More

CAPE CANAVERAL, Fla. -- A space shuttle era mobile launcher platform remains on Launch Pad 39A at NASA's Kennedy Space Center in Florida. It will be moved by crawler-transporter No. 2 as part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6266

CAPE CANAVERAL, Fla. -- A space shuttle era mobile launcher platform remains on Launch Pad 39A at NASA's Kennedy Space Center in Florida. It will be moved by crawler-transporter No. 2 as part of testing to chec More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6284

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out r More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, technicians use instrumentation to ensure accuracy as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform into position for placement at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6286

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, technicians use instrumentation to ensure accuracy as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform into positio More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6281

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform at Launch Pad 39A. The activity was part of testing to check out r More

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6268

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under. The activity was part o More

CAPE CANAVERAL, Fla. -- Technicians monitor progress as crawler-transporter No. 2 moves along the gravel crawler way at NASA's Kennedy Space Center in Florida. The crawler-transporter is undergoing testing at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6263

CAPE CANAVERAL, Fla. -- Technicians monitor progress as crawler-transporter No. 2 moves along the gravel crawler way at NASA's Kennedy Space Center in Florida. The crawler-transporter is undergoing testing at L More

CAPE CANAVERAL, Fla. -- Viewed from above the flame trench at Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6276

CAPE CANAVERAL, Fla. -- Viewed from above the flame trench at Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform. The activity More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way. The crawler-transporter is undergoing testing at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6262

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way. The crawler-transporter is undergoing testing at Launch Pad 39A to check out rece More

CAPE CANAVERAL, Fla. -- Viewed from the Launch Pad 39A flame trench, crawler-transporter No. 2 moves under a space shuttle era mobile launcher platform at NASA's Kennedy Space Center in Florida. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6272

CAPE CANAVERAL, Fla. -- Viewed from the Launch Pad 39A flame trench, crawler-transporter No. 2 moves under a space shuttle era mobile launcher platform at NASA's Kennedy Space Center in Florida. The activity wa More

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6269

CAPE CANAVERAL, Fla. -- Viewed from under a space shuttle era mobile launcher platform on Launch Pad 39A at NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves under. The activity was part o More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform down the gravel crawler way at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6278

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform down the gravel crawler way at Launch Pad 39A. The activity was pa More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way. The crawler-transporter is undergoing testing at Launch Pad 39A to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/ Jim Grossmann KSC-2012-6260

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way. The crawler-transporter is undergoing testing at Launch Pad 39A to check out rece More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a technician uses instrumentation to ensure accuracy as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform into position for placement at Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Jim Grossmann KSC-2012-6285

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, a technician uses instrumentation to ensure accuracy as crawler-transporter No. 2 moves a space shuttle era mobile launcher platform into posit More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform on Launch Pad 39A. The activity was part of testing to check out recently completed modifications to ensure its ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Cory Huston KSC-2012-6277

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves a space shuttle era mobile launcher platform on Launch Pad 39A. The activity was part of testing to check out r More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6292

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way after completion of testing at Launch Pad 39A. The activity is designed to check o More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to the Vehicle Assembly Building after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6291

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to the Vehicle Assembly Building after completion of testing at Launch Pad 39A. The activity is designed to c More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns toits park site after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6296

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns toits park site after completion of testing at Launch Pad 39A. The activity is designed to check out recently More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6294

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way after completion of testing at Launch Pad 39A. The activity is designed to check o More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6299

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recentl More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6297

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recentl More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6300

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recentl More

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 completes testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6290

CAPE CANAVERAL, Fla. -- A truck sprays water on the gravel crawler way at NASA's Kennedy Space Center in Florida as crawler-transporter No. 2 completes testing at Launch Pad 39A. The activity is designed to che More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6298

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to its park site after completion of testing at Launch Pad 39A. The activity is designed to check out recentl More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6293

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 moves along the gravel crawler way after completion of testing at Launch Pad 39A. The activity is designed to check o More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to the Vehicle Assembly Building after completion of testing at Launch Pad 39A. The activity is designed to check out recently completed modifications to ensure the crawler-transporter's ability to carry launch vehicles such as the space agency's Space Launch System heavy-lift rocket to the pad. NASA's Ground Systems Development and Operations Program is leading the 20-year life-extension project for the crawler. A pair of behemoth machines called crawler-transporters has carried the load of taking rockets and spacecraft to the launch pad for more than 40 years at NASA’s Kennedy Space Center in Florida. Each weighing six and a half million pounds and larger in size than a professional baseball infield, the crawler-transporters are powered by locomotive and large electrical power generator engines. The crawler-transporters will stand ready to keep up the work for the next generation of launch vehicles to lift astronauts into space. For more information, visit http://www.nasa.gov/exploration/systems/ground/index.html Photo credit: NASA/Frankie Martin KSC-2012-6295

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, crawler-transporter No. 2 returns to the Vehicle Assembly Building after completion of testing at Launch Pad 39A. The activity is designed to c More