An electromagnetic pulse, or EMP, is one of the most misunderstood yet devastating threats to modern civilization. It is not science fiction. It is physics. When a nuclear weapon detonates high above the Earth’s surface, typically between 25 and 250 miles up, it releases a massive burst of electromagnetic energy. That wave travels at the speed of light, frying electronics, communication systems, and power grids across vast areas in an instant. Unlike a normal explosion, an EMP does not destroy b

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