The physicist and the Navy officer briefed Tibbets on the Manhattan Project and the Muroc bombing tests. Lansdale cautioned him at length on security. After the three men left, Ent specified Tibbets’ assignment. “You have to put together an outfit and deliver this weapon,” the pilot remembers the Second Air Force commander saying. “We don’t know anything about it yet. We don’t know what it can do. . . . You’ve got to mate it to the airplane and determine the tactics, the training, and the ballistics—everything. These are all parts of your problem. This thing is going to be very big. I believe
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