Marine Corps Gen. Joe Dunford, center, chairman of the Joint Chiefs of Staff, talks with Army Lt. Gen. Daniel R. Hokanson, right, before departing from Peterson Air Force Base, Colo., May 13, 2016, following a change-of-command ceremony for the North American Aerospace Defense Command and U.S. Northern Command. Hokanson is vice commander of NORAD's U.S. element and deputy commander of Northcom. DoD photo by Navy Petty Officer 2nd Class Dominique A. Pineiro