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WaPo: Sessions told White House he might leave if Rosenstein is fired

How first responders train for a nuclear attack

First responders from all over the country have come together in Mercury, Nevada to train for a potential radiological attack on U.S. soil. The site, run by the Department of Energy and once the site of nuclear testing in the 1950s, is able to put a small amount of radiation in the ground to give trainees a real sense of what might happen during an attack.

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