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    Key suspect in Natalee Holloway disappearance pleads not guilty

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  • California eighth graders 3D print prosthetic hand for schoolmate

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  • Los Angeles apologizes for Zoot Suit Riots 80 years later

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  • Photos show classified documents in ballrooms, bathrooms at Mar-a-Lago

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  • 10-year-old recounts surviving 24 hours alone in Washington wilderness

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  • Watch: Smoke from Canadian wildfires seen from the International Space Station

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NBC News

Into the fallout: How first responders train for a nuclear attack

04:55

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.April 16, 2018

  • UP NEXT

    Key suspect in Natalee Holloway disappearance pleads not guilty

    03:05

  • California eighth graders 3D print prosthetic hand for schoolmate

    01:51

  • Los Angeles apologizes for Zoot Suit Riots 80 years later

    02:27

  • 64 million remain under air quality alerts from Canada’s wildfire smoke

    01:55

  • Woman accused of fatally shooting neighbor in Florida granted bond

    01:50

  • Photos show classified documents in ballrooms, bathrooms at Mar-a-Lago

    01:29

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