Royal Australian Air Force Sgt. Adam Ironmonger, No. 75 Squadron crew chief, climbs into an F/A-18 Hornet for pre-flight checks during Red Flag 12-3 March 5, 2012 at Nellis Air Force Base, Nev. Red Flag is a realistic air-to-air combat training exercise involving the air forces of the United States and its allies. (U.S. Air Force photo by Senior Airman Brett Clashman)