Chiefs Conference Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, speaks during the 2017 Chiefs of Defense Conference at Fort Belvoir, Va., Oct. 24, 2017. The conference brought together over 70 nations focused on countering violent extremist organizations across the globe. DoD Photo by Army Sgt. James K. McCann SHARE: Download: Full Size (0.85 MB) Credit: Sgt. James K. McCann VIRIN: 171024-D-SW162-1714C.JPG Photo Gallery