A B-52 Stratofortress static display, tail “676,” sits dominantly at the Fairchild Air Force Base, Wash., Heritage Park May 8, 2012. On Dec. 18, 1972, during Linebacker II operations over North Vietnam, “676” became the first B-52 to shoot down an enemy MiG aircraft. The tail gunner, Staff Sgt. Samuel O. Turner, fired his 50-caliber machine guns at a MiG-21 as it moved in to attack the B-52. Turner reported a “gigantic explosion to the rear of the aircraft” and was credited with being the first tail gunner to log a confirmed kill during combat in a B-52. (U.S. Air Force photo/Scott King)