The US bomber that dropped the atomic bomb on Nagasaki was called Bockscar. On August 9, 1945, the B-29 Superfortress carried the plutonium bomb known as Fat Man from Tinian in the Mariana Islands toward Japan.
Bockscar was piloted by Major Charles Sweeney of the US Army Air Forces’ 393rd Bombardment Squadron. Nagasaki was not the crew’s first-choice target: heavy cloud cover obscured Kokura, so the aircraft diverted to Nagasaki after several bombing runs. The bomb exploded over the city’s Urakami Valley, killing tens of thousands of people immediately and many more from injuries and radiation.
The Enola Gay dropped the uranium bomb Little Boy on Hiroshima three days earlier, which is the most common mix-up. The Great Artiste participated in both missions as an observation aircraft, while Necessary Evil was the nickname of another Hiroshima mission plane. Bockscar’s name is often written with different capitalization, but the stored answer is the canonical aircraft name.