U.S. Air Force Airman 1st Class Gregory Thornton, left, 23rd Component Maintenance Squadron aerospace propulsion apprentice, safety wires the line of a T-56 engine to prevent the line from coming off during the engine vibration as Staff Sgt. Caleb Castillo, 23rd CMS aerospace propulsion craftsman, answers Thornton’s questions at Moody Air Force Base, Ga., Aug. 8, 2011. The 23rd CMS won the Air Combat Command Maintenance Effectiveness Award for best small aircraft maintenance unit. (U.S. Air Force photo by Staff Sgt. Airman Stephanie Mancha/Released)