Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/594339'></iframe> Download Embed Share Mattis, Dunford, Brief Press Regarding Syria Strike Defense.gov April 13, 2018 | 22:54 Defense Secretary James N. Mattis and Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, brief reporters at the Pentagon about military operations in Syria, April 13, 2018.