Twilight Talk Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, and his senior enlisted advisor, Army Command Sgt. Maj. John W. Troxell, meet with service members at Al-Udeid Air Base, Qatar, Dec. 6, 2016. DoD photo by Navy Petty Officer 2nd Class Dominique A. Pineiro SHARE IMAGE: Download Image: Full Size (2.41 MB) Tags: Travels , USO , Chairman, Joe Dunford Photo By: Dominique A. Pineiro VIRIN: 161207-D-PB383-015.JPG Photo Gallery