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Mighty Derringer

A nuclear bomb was set off in Indianapolis in December of 1986…or so the super-secret “Mighty Derringer” exercise would have you believe. Long after the government was done nuking Nevada, New Mexico, and the Marshall Islands to test its own weapons, it was still simulating the impacts of nuke attacks on American cities. The video above shows a fake news broadcast used in one such simulation—“Mighty Derringer”—a 1986 exercise that simulated what a nuclear terrorist attack on a major American city might look like. Evidence of the exercise was dug up by former longtime Gizmodo reporter Matt Novak via a Freedom of Information Request.