Hapless B-17 waist gunner "Trigger Joe" learns how to adjust his aim, to take into account the relative motion of his aircraft, his bullets, and the attacking enemy fighter.
Production companies：
First Motion Picture Unit, United States Army Air Forces
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Overview：Hapless B-17 waist gunner "Trigger Joe" learns how to adjust his aim, to take into account the relative motion of his aircraft, his bullets, and the attacking enemy fighter.
