Sixty years ago, on 6 August 1945, a B-29 nicknamed the Enola Gay dropped an atomic bomb on the Japanese city of Hiroshima. Three days later, another B-29 released a second A-bomb over Nagasaki. Emperor Hirohito took to the airwaves on 15 August to inform his people that Japan was surrendering. September 2 saw the ceremonial conclusion of World War II on board the battleship Missouri .