Crew chiefs
Airman 1st Class Andre Griffin, 48th Aircraft Maintenance Squadron F-15 crew chief, relays to Lt. Col. David Peterson, 494th Fighter Squadron pilot, that his flaps and air break are functioning properly, Feb. 11, 2009, at RAF Lakenheath, England. Before taking off for their sortie, F-15 Crew Chiefs help the aircrew perform pre-flight inspections to ensure the air craft is ready to fly. (U.S. Air Force photo by Airman 1st Class Perry Aston)