Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, delivers remarks alongside special envoy for the Global Coalition to Counter the Islamic State of Iraq and Syria, Brett H. McGurk, during a press conference following the 2017 Chiefs of Defense Conference at Fort Belvoir, Va., Oct. 24, 2017. The conference brought together defense chiefs from more than 70 nations to focus on countering violent-extremist organizations around the globe. DoD photo by Petty Officer 1st Class Dominique Pineiro