The B-17 Flying Fortress is a four-engine heavy bomber developed by the Boeing Company in the 1930s. It played a crucial role during World War II, primarily in the European theater, where it was used for strategic bombing missions. Known for its durability and defensive armament, the B-17 could carry a significant payload of bombs while withstanding considerable damage. Equipped with multiple machine guns, the B-17 was designed to protect itself from enemy fighters. Its ability to fly at high altitudes and long distances made it a vital asset for the United States Army Air Forces. The aircraft became iconic for its contributions to the Allied victory in the war.