U.S. Secretary of State John Kerry greets a U.S. Air Force protocol officer as he arrives at Andrews Air Force Base to fly to an Organization of American States ministerial meeting in Antigua, Guatemala, on June 4, 2013. State Department photo/ Public Domain]

U.S. Secretary of State John Kerry greets a U.S. Air Force protocol officer as he arrives at Andrews Air Force Base to fly to an Organization of American States ministerial meeting in Antigua, Guatemala, on June 4, 2013. State Department photo/ Public Domain]

U.S. Secretary of State John Kerry boards a Boeing 757 at Andrews Air Force Base en route to Europe and the Middle East for his first overseas trip as Secretary of State, February 24, 2013. [State Department photo/ Public Domain]

U.S. Secretary of State John Kerry boards a Boeing 757 at Andrews Air Force Base en route to Europe and the Middle East for his first overseas trip as Secretary of State, February 24, 2013. [State Department photo/ Public Domain]