Defense Secretary Ash Carter delivers remarks during an event introducing Air Force Vice Chief of Staff Gen. David L. Goldfein at the Pentagon, April 29, 2016, following his nomination as the next Air Force chief of staff. Joining Carter are, from left, Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff; Goldfein; and Air Force Secretary Deborah Lee James. DoD photo by Army Sgt. 1st Class Clydell Kinchen
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