ARMED FORCES: Exercise Desert Rock

Las Vegas, Nev. had not seen so many soldiers since World War II. Every evening, swarms of shouting, jostling officers and G.I.s from every branch of the service —paratroopers, artillerymen, medics, engineers—roamed the streets and filled the gambling palaces. The hotels were jammed with high brass, and the big silvery transports sweeping down on McCarran Field kept adding to the flood. Then the planes stopped coming in, the khaki-clad Army abruptly vanished. Out on the desert, 65 miles away, 5.000 hand-picked troops were getting their final briefing before Exercise Desert Rock—the G.I.'s introduction to atomic warfare.

Big Brother Explains. One morning...

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