Phil Morrison heard the news on Tinian, where he had helped to prepare the bomb and load it aboard the Enola Gay. “That night we from Los Alamos had a party,” Morrison recalled. “It was war and victory in war, and we had a right to our celebration. But I remember sitting . . . on the edge of a cot . . . wondering what it was like on the other side, what was going on in Hiroshima that night.”

