Jolly Green live fire
Tech Sgt. Lucas Spain, a 413th Flight Test Squadron Special Missions Aviator, fires the GAU-18 .50 caliber machine gun on the range near Eglin Air Force Base, Fla., Aug 21, 2020. The GAU-18 is a DC powered, single barrel, close-bolt, air cooled automatic weapon. (U.S. Air Force photo by Tech. Sgt. John Raven)