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/603113'></iframe> Download Embed Share National Memorial Day Observance Defense.gov May 28, 2018 | 48:31 President Donald J. Trump, Defense Secretary James N. Mattis, and Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, speak at the 150th Memorial Day wreath-laying ceremony at the Tomb of the Unknown Soldier, May 28, 2018, at Arlington National Cemetery, in observance of America’s fallen military service members.