Today in Military History: May 20, 1956; First Hydrogen Bomb Drop from U.S. Aircraft

On May 20, 1956, the first U.S. test of a hydrogen bomb drops from a B-52 bomber over Bikini Atoll in the Pacific. The bomb is released at an altitude of more than 50,000 feet and explodes around 15,000 feet during Operation Redwing.

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