Spc. Seth Wymer, Sentinel, Tomb of the Unknown Soldier, 3d U.S. Infantry Regiment (The Old Guard), places flags in front of the four crypts of the Unknowns in Arlington National Cemetery, VA on May 23, 2013. Includes footage of Sentinels guarding the Tomb and portions of a Changing of the Guard.
The ceremony, known as Flags In, is performed to commemorate and honor U.S. military personnel ahead of Memorial Day weekend and has been conducted annually since 1948.