Senior Airman Chris Mitchell performs an oil service on an F-16 Fighting Falcon between flights during Red Flag-Alaska 09-3 exercises July 28 at Eielson Air Force Base, Alaska. RF-A is a Pacific Air Forces-directed field training exercise for U.S. and coalition forces flown under simulated air-combat conditions. Airman Mitchell is a crew chief assigned to the 169th Aircraft Maintenance Squadron, McEntire Joint National Guard Base, South Carolina. (U.S. Air Force photo/Airman 1st Class Laura Goodgame)