U.S. Marine General John F. Kelly (front to back) walks with U.S. Air Force General Douglas Fraser, U.S. Army General <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Martin+Dempsey&family=editorial&specificpeople=2116621 ng-click='$event.stopPropagation()'>Martin Dempsey</a> and U.S. Secretary of Defense Leon Panetta, Secretary of Defense, during a change of command ceremony at United States Southern Command on November 19, 2012 in Doral, Florida. U.S. Marine Gen. John Kelly takes over the command from U.S. Air Force Gen. Douglas Fraser.