Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, right, and Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman, have a conversation aboard a UH-60 Black Hawk helicopter after a visit to Train Advise Assist Command - East at Forward Operating Base Gamberi, Afghanistan, March 21, 2018. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro