Submarine Training Chairman of the Joint Chiefs of Staff Gen. Joe Dunford and Army Command Sgt. Maj. John Wayne Troxell, senior enlisted advisor to the chairman, observe a demonstration of submarine training from students of the Trident Training Facility at Naval Submarine Base Kings Bay, Ga., May 20, 2016. SHARE IMAGE: Download Image: Full Size (0.33 MB) Tags: Chairman, Dunford Photo By: D. Myles Cullen, DOD VIRIN: 160520-D-VO565-005C.JPG Photo Gallery