U.S. Air Force Staff Sgt. William Delphia, 633rd Security Forces Squadron combat arms training and maintenance instructor, demonstrates reloading procedures for the M9 Beretta pistol at Langley Air Force Base, Va., Aug. 13, 2013. Delphia teaches approximately 15 to 20 students daily. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)