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Gen. Milley comments on 'significant' Chinese missile test

01:48

NBC News' Lester Holt sat down for an exclusive interview at the Aspen Security Forum with Joint Chiefs of Staff Chair Gen. Mark Milley and discussed the recent hypersonic missile test in China. Gen. Milley did not discuss details of how the United States could match it but mentioned that the test was "very significant." NBC's Courtney Kube reports from the Pentagon.