ImagesMilitary History Image of the day: a B-17 prototype from 1939 Boeing Y1B-17A in flight near Mt. Rainier on Feb. 28, 1938. (U.S. Air Force photo) September 13, 2022 Chris Carter B-17 Flying Fortress
Boeing Y1B-17A in flight near Mt. Rainier on Feb. 28, 1938. (U.S. Air Force photo)