Staff Sgt. Edgar Cerrillo, 28th Security Forces Squadron unit orientation training instructor fires a M-4 Carbine rifle, during a qualification course at an outdoor shooting range in Rapid City, S.D., May 29, 2014. The training focused on extreme marksmanship, mental and physical fitness as well as tactical engagement and agility. (U.S. Air Force photo by Airman 1st Class Rebecca Imwalle/ Released)