Soldiers place flags at Arlington for Memorial Day (17 images)
Old Guard U.S. Army soldiers place American flags at the tombstones of the fallen at Arlington National Cemetery in Arlington, Va., on Thursday in advance of Memorial Day weekend. President Donald Trump and first lady Melania Trump visited the cemetery as well, to take part in the "Flags In" tradition.
The changing of the guard by the Tomb Guard sentinels of the 3rd U.S. Infantry Regiment takes place at the Tomb of the Unknown Soldier, which is guarded 24 hours a day. Photo by Pat Benic/UPI