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UNITED STATES - APRIL 17: Michael Griffin, Under Secretary of Defense for Research and Engineering, takes his seat for the House Armed Services Committee hearing on "Promoting DOD's Culture of Innovation" on Tuesday, April 17, 2018. (Photo By Bill Clark/CQ Roll Call)

UNITED STATES - APRIL 17: Michael Griffin, Under Secretary of Defense for Research and Engineering, takes his seat for the House Armed Services Committee hearing on "Promoting DOD's Culture of Innovation" on Tuesday, April 17, 2018. (Photo By Bill Clark/CQ Roll Call)

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