Original World War 2 military aircraft industry trade magazine vintage ad forUNITED STATES STEEL. Belly Gunner's Prayer at 50 Below. When a gunner in a high flying US bomber presses the firing button of his gun, it must work instantly! It does. Steel gun springs by US Steel. Art by Glenn Grohe. Old 1943 dated WW2 wartime era propaganda magazine advertisement. There is a light stamp on the bottom page edge. Would matte and frame very nicely!