U.S. Air Force Staff Sgt. Brandon Keller, (right), 633rd Security Forces Squadron response force leader, ensures his M-4 is clear and safe before duty while Staff Sgt. Walter Stiles, 633rd SFS response force leader, watches at Langley Air Force Base, Va., Aug. 1, 2014. Security forces Airmen are issued weapons from the armory before receiving their daily assignments. (U.S. Air Force photo by Senior Airman Connor Estes/Released)