On March 23, 1960, Staff Sergeant Joseph G. Pack, 24, of Pembroke, Virginia, was accidentally killed when the 20 mm tail-gun of a B-47 bomber was fired during a gunnery test.  The sergeant was assigned to the 100th Bomb Wing at Pease Air Force Base.  No further details are known. 

     Source:

     Evening Star, (Washington, D.C.), “Gun Blast Kills GI”, March 24, 1960, pg. C-3