Tech. Sgt. Douglas McMullin and Staff Sgt. Zachery Jones use a pneumatic nail gun to secure a wall.
U.S. Air Force Tech. Sgt. Douglas McMullin and Staff Sgt. Zachery Jones, both with the 777th Expeditionary Prime Base Engineer Emergency Force Squadron, use a pneumatic nail gun to secure a wall of a medical aid station at Access Control Station 2, Kandahar City, Afghanistan, on Aug. 2, 2010.