U.S. Marine Corps Gen. Joseph Dunford Jr., Chairman of the Joint Chiefs of Staff, shakes hands with U.S. Air Force 1st Lt. Nickalous Lewis, 633 Air Base Wing protocol officer, after his arrival at Joint Base Langley-Eustis, Va., June 13, 2016. Along with a tour of Air Combat Command, Dunford toured the 480th Intelligence, Surveillance and Reconnaissance Wing with U.S. Air Force Gen. Hawk Carlisle, ACC commander. (U.S. Air Force photo by Airman 1st Class Kaylee Dubois)