President, SECDEF, CJCS Lay Wreath at Tomb of the Unknown Soldier Posted on 11/11/202111/11/2021 by Justin Imel President Joe Biden, Secretary of Defense Lloyd J. Austin III, and Army Gen. Mark A. Milley, chairman of the Joint Chiefs of Staff, attend the Veterans Day observance at the Tomb of the Unknown Soldier in Arlington National Cemetery. Share with Friends: