5 Men Stand Under An Exploding Nuke of the Day

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July 19, 1957, the heart of the Cold War.

1 test atomic warhead, detonated 18,500 feet above ground.

5 Air Force officers and 1 photographer, who volunteered to stand underneath it to demonstrate the relative safety of a low-grade nuclear exchange in the atmosphere.

As NPR's Robert Krulwich writes: "You have to see this to believe it."