Gunsmith work
Tech. Sgt. Margery Martin, 575th Combat Sustainment Squadron, installs the barrel of an M16a2 assault rifle receiver at the gunsmith shop on Lackland's Training Annex. The only gunsmith shop in the Air Force, it focuses on the transfer of Marine and Army M16a2 assault rifles into the hands of Airmen. (U.S. Air Force photo/Robbin Cresswell)