Player Embed Code: Download Embed Share First Lady, Austin, Milley Lay Wreath at 9/11 Memorial Defense.gov Sept. 11, 2023 | 2:25 First Lady of the U.S. Dr. Jill Biden, Secretary of Defense Lloyd J. Austin III and Chairman of the Joint Chiefs of Staff Army Gen. Mark A. Milley lay a wreath at the National 9/11 Pentagon Memorial to honor lives lost in the 2001 terrorist attacks.