The Boeing B-17 Flying Fortress Is A Four-Engine Heavy Bomber Developed In The 1930S For The United States Army Air Corps. Flying Legends Air Show, Imperial War Museum, Duxford, Cambridgeshire. Uk.14-15 July 2018. The Boeing B-17 G Flying Fortress Is A Four-Engine Heavy Bomber Developed In The 1930S For The United States Army Air Corps. This Aircraft Is Sally B, Which Played Memphis Belle In The Film Of That Name.

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