Defense Secretary Ash Carter delivers remarks during a change-of-command ceremony for U.S. Central Command at MacDill Air Force Base, Fla., March 30, 2016. Joining Carter on stage are, from left, Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff; Army Gen. Joseph Votel, incoming commander of Centcom; and outgoing commander Gen. Lloyd J. Austin III. DoD photo
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