The ‘B-17 Flying Fortress’ was a heavy bomber that was produced by Boeing during World War 2. The B-17 was a powerful bomber, and it was capable of carrying a large payload of bombs. The B-17 was also equipped with a sophisticated fire control system, which made it very accurate. The B-17 was used extensively in the European Theater, where it was used to bomb German cities. The B-17 was also used to support Allied ground forces. The B-17 was a highly effective bomber, and it played a major role in the Allied victory in World War 2.