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/813338'></iframe> Download Embed Share Defense Secretary and Joint Chiefs Chairman Honor 9/11 Victims Defense.gov Sept. 11, 2021 | 01:00:00 Secretary of Defense Lloyd J. Austin III and Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, host a 9/11 observance at the Pentagon.