U.S. Air Force Staff Sgt. Curtis Downer, 447th Expeditionary Aircraft Maintenance Squadron munitions systems specialist, installs a part onto a GBU-12 Paveway II laser-guided bomb Aug. 8, 2016, at Incirlik Air Base, Turkey. Munitions systems specialists inspect, deliver and maintain guided and unguided non-nuclear munitions. (U.S. Air Force photo by Senior Airman John Nieves Camacho)