U.S. Soldiers with the 671st Engineer Company (Multi-Role Bridge), from Clackamas, Ore., conduct boat familiarization in preparation for the upcoming Operation River Assault mission at Fort Chaffee, Ark., July More
U.S. Soldiers with the Army Reserve and National Guard components conduct a bridge crossing rehearsal for Operation River Assault at Fort Chaffee, Ark., July 22, 2013. (U.S. Army photo by Staff Sgt. Amber Gree More
U.S. Army Spc. Gregory Fulton, a cook with the 368th Engineer Battalion, prepares a meal for Soldiers participating in Operation River Assault at Fort Chaffee, Ark., July 17, 2013. (U.S. Army photo by Spc. Ju More
U.S. Army Staff Sgt. Heriberto Santiago, range safety noncommissioned officer in charge with the 854th Engineer Battalion, explains safe operating procedures for the M249-B light machine gun during Operation Ri More
A U.S. Soldier waits to fire the M249 lightweight machine gun on the familiarization range at Fort Chaffee, Ark., July 17, 2013. The Soldiers participated in Operation River Assault, a U.S. Army Reserve exercis More
U.S. Soldiers with the 854th Engineer Company, (Forward Support), listen to instructions before entering the demolition range at Fort Chaffee, Ark., July 18, 2013. Some of the basic safety requirements include More
U.S. Army Sgt. 1st Class James Beard, an area clearance noncommissioned officer in charge with the 483rd Engineer Battalion, describes to the Soldiers assigned to the 854th Engineer Company, all of the explosiv More
U.S. Army Spc. David Marcinek, a boat operator for the 671st Engineer Company (Multi-Role Bridge) performs a float test on his Mark II bridge erection boat, in preparation for Operation River Assault at Fort Ch More
U.S. Soldiers with the 671st Engineer Company (Multi Role Bridge), based in Clackamas, Ore., move a boat on a heavy expanded mobility tactical truck toward Engineer Lake during a boat operating exercise as part More
U.S. Army Sgt. 1st Class Richard Llewellyn, left, with the 854th Engineer Battalion (Forward Support), receives instructions from Sgt. 1st Class Dennis Wycoff, with the 348th Engineer Company, on the proper way More
U.S. Army Staff Sgt. Brian Winter, right, a diver supervisor assigned to the 511th Engineer Dive Detachment starts the motor to their Zodiac inflatable boat during a reconnaissance mission at Fort Chaffee, Ark. More
U.S. Army Staff Sgt. Daniel Ozment, a combat engineer with the 671st Engineer Company (Multi Role Bridge), communicates with other members of his unit via radio before starting a sling load exercise during Oper More
U.S. Army Spc. Daniel Hall, left, and Cpl. Clayton Cahoon rehearse stacking outside of an entryway during military operations urban terrain training at Fort Chaffee, Ark., July 20, 2013. Hall and Cahoon are wit More
U.S. Army Pfc. Joseph Robinson, a combat engineer with the 744th Engineer Company (Mobility Augmentation), based in Ogden, Utah, awaits firing orders during a live-fire convoy in preparation for Operation River More
U.S. Soldiers with the 74th Engineer Company (Multi-Role Bridge), based in Fort Hood, Texas, maneuver a Bridge Erection Boat towards four-way ramp rafts, also known as six-floats and shore to shore full-enclosu More
A U.S. Soldier with the 74th Engineer Company (Multi-Role Bridge) walks toward a Mark II bridge erection boat docked along the Arkansas River during a rehearsal for Operation River Assault at Fort Chaffee, Ark. More
A U.S. Soldier with the 74th Engineer Company (Multi-Role Bridge), based out of Fort Hood, Texas, walks the shore along the Arkansas River during a rehearsal exercise for Operation River Assault at Fort Chaffee More
U.S. Army Cpl. Praderm Indratula, a bridge crew chief with the 671st Engineer Company loads a bridge section onto a heavy expanded mobility tactical truck during Operation River Assault at Fort Chaffee, Ark., J More
U.S. Soldiers with the 74th Engineer Company (Multi-Role Bridge), based in Fort Hood, Texas, ride a Bridge Erection Boat on the Arkansas River during a rehearsal for Operation River Assault at Fort Chaffee, Ark More
U.S. Soldiers with the 74th Engineer Company, stand along the Arkansas River during a rehearsal exercise for Operation River Assault July 22, 2013, at Fort Chaffee, Ark. (U.S. Army photo by Sgt. 1st Class Mich More
U.S. Soldiers with the 744th Engineer Company (Mobility Augmentation), out of Ogden, Utah, listen to a safety briefing before they start a land navigation exercise during Operation River Assault at Fort Chaffee More
Pfc. Johnathen O'Neill, a cook with the 854th Engineer Battalion (Forward Support), and a native of Windham, N.Y., sits in a barber chair in the Fort Chaffee, Ark., barbershop July 23, 2013. The chair is famous More
U.S. Army Spc. Anthony Cicala, an equipment operator with the 328th Engineer Company (Horizontal), based in Northfield, N.J., prepares to move a deuce dozer towards a dig site during Operation River Assault at More
A U.S. Army security element convoy travels across a finished Improved Ribbon Bridge during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. The bridge was the final exercise for nearly 800 Soldier More
U.S. Army combat engineers with the 671st Engineer Company (Multi-Role Bridge), lower a Mark II bridge erection boat onto the Arkansas River during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. More
U.S. Army Mark II bridge erection boat crews await their turn during the construction of an improved ribbon bridge across the Arkansas River at Fort Chaffee, Ark., July 24, 2013. The Army Reserve's 671st Engine More
U.S. Army Spc. Kimberly Anderson checks on boats while performing safety duties during the construction of an Improved Ribbon Bridge across the Arkansas River during Operation River Assault at Fort Chaffee, Ark More
U.S. Soldiers with the 671st Engineer Company (Multi-Role Bridge) lower a Mark II bridge erection boat onto the Arkansas River during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. Bridge-buildin More
U.S. Soldiers with the 671st Engineer Company (Multi-Role Bridge), from Clackamas, Ore., conduct boat familiarization in preparation for the upcoming River Assault mission at Fort Chaffee, Ark. July 17, 2013. More
U.S. Army Sgt. Jacob Whisler, with the 854th Engineer Company, changes out the barrel of a M249 lightweight machine gun on the familiarization range at Fort Chaffee, Ark., July 17, 2013. The Soldiers participat More
Spc. Gregory Fulton, a cook with the 368th Engineer Battalion (Forward Support Company), and a native of Boston, puts the final touches on a meal to be served to Soldiers participating in Operation River Assaul More
U.S. Army Staff Sgt. Heriberto Santiago, range safety noncommissioned officer in charge, assists Spc. Michael Yoder, both with the 854th Engineer Battalion, in demonstrating safe operating procedures for the M2 More
U.S. Army Sgt. Jesse Patrick, a boat operator with the 671st Engineer Company (Multi Role Bridge), based in Clackamas, Ore., pilots an Army boat on Engineer Lake during a boat operating exercise as part of Oper More
U.S. Army Sgt. 1st Class Richard Llewellyn, with the 854th Engineer Battalion, receives instructions from Sgt. 1st Class Dennis Wycoff, with the 348th Engineer Company, on the proper way to insert a blasting ca More
Sgt. 1st Class Richard Thomas Llewellyn, the assistant operations noncommissioned officer with the 854th Engineer Battalion (Forward Support), began his career as an enlisted infantryman in 1995 and transitione More
U.S. Army Sgt. David Sklodowski, right, assigned to the 854th Engineer Company (Forward Support), slices into C-4 to insert a detonation cord to practice the proper technique for preparing a shape charge at For More
U.S. Army Spc. David Marcinek, a boat operator with the 671st Engineer Company (Multi-Role Bridge) performs a float test on an Mark II bridge erection boat in preparation for Operation River Assault at Fort Cha More
U.S. Army Spc. Han Zahn approaches Lonestar Village during a Military Operations Urban Terrain training exercise as part of Operation River Assault at Fort Chaffee, Ark., July 20, 2013. Zahn is a military polic More
A CH-47 Chinook, assigned to the 7th Aviation Battalion, 158th Aviation Regiment, from Fort Hood, Texas, lands at Fort Chaffee, Ark., July 20, 2013. The Chinook was used to help transport bridge sections during More
U.S. Army Spc. Jacob Feyers, a diver with the 511th Engineer Dive Detachment performs a practice dive in the Arkansas River while on a reconnaissance mission at Fort Chaffee, Ark., July 20, 2013. Feyers is part More
A U.S. Army combat engineer with the 744th Engineer Company (Mobility Augmentation), based in Ogden, Utah, fires an M249 Squad Automatic Weapon at a pop-up target during a live-fire convoy exercise in preparati More
Pvt. Ray Pangelinan, combat engineer with the 744th Engineer Company (Mobility Augmentation), out of Ogden, Utah, passes by the 100 meter maker while getting his pace count before starting a land navigation exe More
U.S. Soldiers with the 74th Engineer Company (Multi-Role Bridge), based in Fort Hood, Texas, make plans to assemble a row of four-way ramp rafts, also known as six-floats and shore to shore full-enclosure float More
U.S. Army Staff Sgt. James Mobley, a combat engineer with the 671st Engineer Company, takes command of a barge section after it leaves port during Operation River Assault at Fort Chaffee, Ark., July 22, 2013. ( More
A CH-47 Chinook, piloted by U.S. Soldiers with the 7th Aviation Battalion, 158th Aviation Regiment, drops a four-way ramp raft, also known as a six-float and shore to shore full-enclosure floating roadway, into More
A CH-47 Chinook, piloted by U.S. Soldiers with the 7th Aviation Battalion, 158th Aviation Regiment, drops a four-way ramp raft, also known as a six-float and shore to shore full-enclosure floating roadway, onto More
U.S. Soldiers with the 74th Engineer Company operate a boat during a rehearsal exercise on the Arkansas River for Operation River Assault July 22, 2013, at Fort Chaffee, Ark. (U.S. Army photo by Sgt. 1st Class More
U.S. Soldiers with the 671st Engineer Company (Multi-Role Bridge), stage Mark II bridge erection boats along the Arkansas River during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. Bridge-buildi More
U.S. Army Pfc. Johnathen O'Neill, a cook with the 854th Engineer Battalion, sits in a barber chair at Fort Chaffee, Ark., July 23, 2013. (U.S. Army photo by Pfc. Justin Snyder/Released)
U.S. Army Spc. Shane Sander, an equipment operator with the 380th Engineer Support Company, based in Greenville, Miss., prepares to move a high mobility engineer excavator vehicle towards a dig site as part of More
A U.S. Army CH-47 Chinook helicopter assigned to the 7th Aviation Battalion, 158th Aviation Regiment, drops buoys as divers assigned to the 511th Engineer Dive Detachment, 30th Engineer Battalion, 20th Engineer More
U.S. Soldiers construct a 300 meter bridge across the Arkansas River during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. (U.S. Army photo by Sgt. Michael T. Crawford/Released)
U.S. Soldiers with the 671st Engineer Comany (Multi-Role Bridge), from Clackamas, Ore., conduct boat familiarization in preparation for the upcoming Operation River Assault mission at Fort Chaffee, Ark., July 1 More
U.S. Soldiers with the Army Reserve and National Guard components conduct a bridge crossing rehearsal with M3 Bradley Fighting Vehicles and a Palletized Load System in preparation for Operation River Assault at More
A U.S. Soldier assigned to the 854th Engineer Battalion fires a M249-B light machine gun for qualification during Operation River Assault exercise at Fort Chaffee, Ark., July 17, 2013. (U.S. Army photo by Sgt. More
U.S. Army Sgt. 1st Class Michel Sauret, training and operation noncommissioned officer for the 354th Mobile Public Affairs Detachment, receives a quick safety check from Sgt. Jacob Whisler, with the 854th Engin More
U.S. Army Spc. Chris Lowrimore, a deckhand with the 671st Engineer Company (Multi Role Bridge), based in Clackamas, Ore., rides on a boat on Engineer Lake during a boat operating exercise as part of Operation R More
U.S. Soldiers assigned to the 854th Engineer Company (Forward Support), connect their shaped charges to the main ignition line at the demolition range at Fort Chaffee, Ark., July 18, 2013. The shape charge will More
U.S. Army Sgt. 1st Class James Beard, right, an area clearance Noncommissioned officer in charge of the 483rd Engineer Battalion, describes to the Soldiers assigned to the 854th Engineer Company, all of the exp More
Boat operators with the 671st Engineer Company (Multi-Role Bridge) perform a float test using a Mark II bridge erection boat in preparation for Operation River Assault in Fort Chaffee, Ark., July 18, 2013. (U.S More
U.S. Army combat engineers assigned to the 744th Engineer Company (Mobility Augmentation), from Ogden, Utah, receive a safety brief from their operation noncommissioned officer, Sgt. 1st Class Matthew Flood, be More
U.S. Army Staff Sgt. Brian Winter, rear, performs a safety check on Spc. Jacob Feyers, prior to a practice dive in the Arkansas River while on a reconnaissance mission at Fort Chaffee, Ark., July 20, 2013. Wint More
A military police officer assigned to the 94th Military Police Company, based in Londonberry, N.H., clears a building during Military Operations Urban Terrain training as part of Operation River Assault, at Lon More
U.S. Army Pfc. Ryan Record, a combat engineer with the 744th Engineer Company (Mobility Augmentation), fires an M16 rifle at a pop-up target during a live-fire convoy exercise as part of the training during Ope More
U.S. Army Sgt. Richard Bricen, bridge crew chief with the 74th Engineer Company, operates a boat during a rehearsal exercise on the Arkansas River for Operation River Assault July 22, 2013, at Fort Chaffee, Ark More
U.S. Soldiers with the 671st Engineer Company connect two sections of a bridge together during Operation River Assault at Fort Chaffee, Ark., July 22, 2013. (U.S. Army Reserve photo by Sgt. Dalton Smith/Released)
Four soldiers of the 744th Engineer Company (Mobility Augmentation), out of Ogden, Utah pull security for the rest of their squad as they mark points on their map before starting a land navigation exercise duri More
U.S. Army combat engineers with the 671st Engineer Company (Multi-Role Bridge), await to deploy Mark II bridge erection boats to push bridge sections together during Operation River Assault at Fort Chaffee, Ark More
U.S. Soldiers inspect an Improved Ribbon Bridge following its completion during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. The bridge completion was the final exercise for nearly 800 Soldiers More
A U.S. Army CH-47 Chinook helicopter flies low above the water's surface of the Arkansas River to drop off a team of divers during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. Bridge-building u More
U.S. Army Spc. David Marcinek, a boat operator with the 671st Engineer Company (Multi-Role Bridge), operates his boat during a familiarization exercise in preparation for the upcoming Operation River Assault mi More
U.S. Soldiers with the Army Reserve and National Guard components conduct a bridge crossing rehearsal in preparation for Operation River Assault at Fort Chaffee, Ark., July 22, 2013. (U.S. Army photo by Staff More
U.S. Army Pfc. Justin Snyder, a public affairs journalist with the 354th Mobile Public Affairs Detachment, operates equipment in a simulated convoy trainer at Fort Chaffee, Ark., July 17, 2013. The Soldiers par More
U.S. Soldiers assigned to the 671st Engineer Company (Multi-Role Bridge) perform a float test on their Mark II bridge erection boat in preparation for Operation River Assault at Fort Chaffee, Ark., July 18, 201 More
U.S. Soldiers with the 671st Engineer Company (Multi Role Bridge), from Clackamas, Ore., pilot boats on Engineer Lake during a boat operating exercise as part of Operation River Assault at Fort Chaffee, Ark., J More
U.S. Soldiers with the 854th Engineer Company, (Forward Support) struggle to open the protective cases containing the 40-pound cratering charges they will be using to practice their combat engineer skills at Fo More
U.S. Soldiers with the 854th Engineer Company (Forward Support), from Saugerties, N.Y., prepare to lower 40 pounds of cratering charge into a hole they created with a 15 pound shape charge for practice on their More
U.S. Army Spc. Jacob Feyers, a diver with the 511th Engineer Dive Detachment provides depth information following a practice dive in the Arkansas River while on a reconnaissance mission at Fort Chaffee, Ark., J More
A military police officer with the 94th Military Police Company, based in Londonberry, N.H., clears a building during a Military Operations Urban Terrain training as part of Operation River Assault at Lonestar More
U.S. Army combat engineers assigned to the 744th Engineer Company (Mobility Augmentation), from Ogden, Utah, await takeoff in a CH-47 Chinook helicopter for flight familiarization training during the annual U.S More
Pfc. Jordan Wamsley, left, and Pfc. Trevor Petersen, right, review their map before marching to their next checkpoint during a land navigation exercise during Operation River Assault at Fort Chaffee, Ark., July More
U.S. Soldiers with the 74th Engineer Company get bridge sections ready during a rehearsal exercise on the Arkansas River for Operation River (U.S. Army photo by Sgt. 1st Class Michel Sauret/Released)
A U.S. Soldier with the 671st Engineer Company pulls on a rope to connect two sections of a bridge together during Operation River Assault at Fort Chaffee, Ark., July 22, 2013. (U.S. Army Reserve photo by Sgt. More
U.S. Soldiers with the 328th Engineer Company (Horizontal), and the 380th Engineer Support Company (Horizontal), move toward a dig site to prepare trenches during Operation River Assault at Fort Chaffee, Ark., More
U.S. Army Pfc. Johnathen O'Neill, a cook with the 854th Engineer Battalion, cleans a food station in the dining facility at Fort Chaffee, Ark., July 23, 2013. (U.S. Army photo by Pfc. Justin Snyder/Released)
U.S. Soldiers with the 671st Engineer Company (Multi-Role Bridge), work to assemble bridge sections on the Arkansas River during Operation River Assault at Fort Chaffee, Ark., July 24, 2013. Bridge-building uni More
U.S. Army combat engineers with the 671st Engineer Company (Multi-Role Bridge), 74th Engineer Company (MRB) and 459th Engineer Company (MRB), watch from their Mark II bridge erection boats as a CH-47 Chinook he More
U.S. Soldiers with the 671st Engineer Company (Multi-Role Bridge), from Clackamas, Ore, conduct boat familiarization in preparation for the upcoming Operation River Assault mission at Fort Chaffee, Ark., July 1 More
Sgt. David Sklodowski, of Parsippany, N.J., combat engineer with the 854th Engineer Company (Forward Support), prepares a 40-pound cratering charge for his soldiers to open for practice at the demolition range More
U.S. Army Spc. David Marcinek, a boat operator for the 671st Engineer Company (Multi-Role Bridge) performs a float test on his Mark II bridge erection boat in preparation for Operation River Assault at Fort Cha More