At the AEC's atomic proving grounds in Nevada, a giant electronic counting machine with an amplified beat ticked off the seconds. The first atomic military combat maneuvers in the U.S. were to start with an atomic blast. Anesthetized dogs, sheep and rats were spotted at proper intervals across Yucca Flat. Specially briefed troop detachments, including one unit of the Sixth Army band, stood by to take their part in the demonstration.

Five . . . four . . . three . . . two . . . one . . . zero. The final seconds were counted and the switch...

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