Imagine the Enola Gay reporting back to base that the bomb failed to explode.The Americans want their bomb back but the Japanese are infuriated and have seized the device and hidden it in the mountains. Japan, a former ally of Germany, recruit former NAZIS scientists to reverse-engineer and reassemble the bomb. The US government has decided not to say a word to the public about the failed attempt and loss of the device because the project was secret anyways. The Japanese end the war without suffering another single loss, the American naval fleets and assets in the Pacific returned home and the war was over. Hiroshima and Nagasaki were never bombed.