Senior Airman Kyle Robinson uses a flashlight to inspect the exterior of a C-17 for missing screws or damage to the aircraft June 18, 2009, at Charleston Air Force Base, S.C. Airman Robinson is a crew chief with the 315th Aircraft Maintenance Squadron. (U.S. Air Force photo/James M. Bowman) (RELEASED)

Senior Airman James Witherspoon installs a main landing gear safety downlock pin on a C-17 aircraft June 18, 2009, at Charleston Air Force Base, S.C. Airman Witherspoon is a crew chief with the 315th Aircraft Maintenance Squadron. (U.S. Air Force photo/James M. Bowman) (RELEASED)

Senior Airman Neil White patrols the mass parking area on the flightline June 18, 2009, at Charleston Air Force Base, S.C. Airman White is a patrolman with the 437th Security Forces Squadron. (U.S. Air Force photo/James M. Bowman) (RELEASED)