New U.S. Army Dive Bomber -- The A-31, a new U.S. two-seater bomber, is shown in a test flight. Powered by a single air cooled radial engine, it has an unusually long range of operation. The A-31, called the "Vengeance" by the British, has been in mass production for some time for shipment to United Nations' fighting fronts. February 22, 1943. (Photo by Interphoto News Pictures).