The Boeing B-29 Superfortress was the end all, be all of World War II. Dropping a nuclear bomb on both Nagaski and Hiroshima in August of 1945. The Enola Gay and Bockscar marked the first and only occasion in which nuclear weapons have ever been used in times of war.
After continuation of active duty throughout the Korean Conflict, the B-29 was officially retired in the 1960s. FIFI is the only remaining B-29 Superfortress which still flies and is operated by dedicated volunteers. Bockscar is currently on display at the Wright-Patterson Air Force Museum in Dayton, Ohio.