U.S. Air Force Staff Sgt. Jostin Schaffer, 633rd Security Forces Squadron combat arms instructor, marks bullet holes on a target during Combat Arms Training and Maintenance training at Langley Air Force Base, Va., Nov. 1, 2012. Security Forces personnel test their firing abilities through qualification assessments in different firing positions. (U.S. Air Force photo by Senior Airman Racheal E. Watson/Released)