The Boeing B-29 Superfortress under construction at the Boeing Wichita plant in this undated photo. The B-29 was a four-engine propeller-driven heavy bomber that was flown primarily by the United States in World War II and the Korean War. The B-29 remained in service in various roles throughout the 1950s. The B-29 was used to drop the atomic bomb over Japan in August of 1945.
Boeing / Courtesy