Lightning was one of the best-named aircraft of World War 2. The Lockheed P-38 was also one of the few fighters in production throughout hostilities. Immediately recognizable by its twin-boom tail layout, the P-38 Lightning was one of the mainstays of the USAAF's fighter inventory. Deployed in all theaters, Lightnings excelled in most, being one of the few American fighters armed with cannon. Subject to lengthy development throughout the war, the P-38 exemplified the technical peak reached by aeronautical engineers in the 1940s.