Example image of eyePlorer eyePlorer map for 'Ball turret': Gun turret Sperry Corporation B-17 Flying Fortress B-24 Liberator M2 Browning machine gun PB4Y-2 Privateer PBM Mariner Randall Jarrell The Death of the Ball Turret Gunner John Irving The World According to Garp Call of Duty 2: Big Red One Axis powers Secret Weapons Over Normandy Alan Magee Heavy bomber Nose gunner David R. Kingsley Archibald Mathies Edward S. Michael B-17 Flying Fortress variants OV-10 Bronco Dornier Do 217 Operational History of the Luftwaffe (1933-1945)