US Air Force (USAF) AIRMAN First Class (A1C) Guadalupe Acosta (left), Crew CHIEF, 1ST Aircraft Maintenance Squadron (AMXS), 1ST Maintenance Group (MXG), 1ST Fighter Wing (FW), and another maintenance technician perform a final pre-flight check on a USAF 71st Fighter Squadron (FS), 1ST Operations Group (OG), 1ST FW, F-15 Eagle fighter aircraft prior to its flying a sortie from Langley Air Force Base (AFB), Virginia (VA), as part of Operation NOBLE EAGLE, which is direct US military operations in support of homeland defense efforts