A pair of 4-megaton hydrogen bombs, each more than 250 times more powerful than the bomb that destroyed Hiroshima, broke off a damaged B-52 over North Carolina. One of the bombs disintegrated upon impact, but the other floated down beneath its parachute and armed itself. It was later found in a field outside Goldsboro, North Carolina, with three of its four safety mechanisms tripped or rendered ineffective by the plane’s breakup. Had the fourth switch flipped, a vast section of eastern North Carolina would have been destroyed, and nuclear fallout might have descended on Washington, DC, and New
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