Chairman Remarks Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, delivers remarks during a change of presidency ceremony at the National Defense University in Washington, D.C., Sept. 25, 2017. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro SHARE: Download: Full Size (0.94 MB) Credit: Dominique A. Pineiro VIRIN: 170925-D-PB383-002.JPG Photo Gallery