 In post-war years, he achieved fame as a general in the Air National Guard, the 20th governor of South Dakota, president of the National Rifle Association, and the first commissioner of the American Football League. Not bad. That's quite a resume. And on 16 July 1945, during World War II, the cruiser USS Indianapolis left San Francisco with an atom bomb, which would be used on Japan. It was sunk shortly after it delivered the bomb.