Leader Greetings Defense Secretary Ash Carter speaks with Army Command Sgt. Maj. John W. Troxell, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, during the 2016 Defense Senior Enlisted Council at the Pentagon, Nov. 30, 2016. DoD photo by Army Sgt. Amber I. Smith SHARE: Download: Full Size (1.55 MB) Credit: Sgt. Amber I. Smith VIRIN: 161130-D-SV709-122.JPG Photo Gallery