U.S. Air Force Airman 1st Class Joshua Wood, 1st Maintenance Squadron aircraft armament systems technician, cleans a BRU-47 bomb rack for an F-22 Raptor at Langley Air Force Base, Va., Sept. 3, 2014. Along with preventative maintenance and cleaning, armament technicians operate and repair support equipment and electrical generators. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)