This aircraft variant of the famous “Ma Deuce” was dubbed the AN/M2 (officially the “Browning ... guns in the main cabin operated by the waist gunner(s) to defend from side attacks.

Roy was a "left waist" gunner on the B-24 Liberator, meaning he was positioned to fire a .50 caliber machine gun from an opening in the side of the plane. But as the crew members flew, 50 to 60 ...