An rocket designed to intercept an intercontinental ballistic missiles is launched from Vandenberg Air Force Base in Calif. on Tuesday, May 30, 2017. The Pentagon says it has shot down a mock warhead over the Pacific in a success for America's missile defense program. The test was the first of its kind in nearly three years. And it was the first test ever targeting an intercontinental-range missile like North Korea is developing. (Matt Hartman via AP)
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