Staff Sgt. Nathan Warren, 28th Security Forces Squadron combat arms instructor, fires an M-9 pistol at a target during the shooting range portion of the 2015 Global Strike Challenge security forces competition at Camp Guernsey, Wyo., Sept. 23, 2015. Competitors accumulated points for the number of targets hit and how quickly they finished the course. (U.S. Air Force photo by Senior Airman Brandon Valle/Released)