Watch Changing of the Guard at Arlington National Cemetery in 4K

We have only been able to visit once in our life, but what an experience. PBS has captured the changing of the guard in 4k resolution which is wonderful to see.

If at all possible watch it in the super high quality.

Twenty-one steps south. Face east 21 seconds. Face north 21 seconds. Twenty-one steps north. Face east 21 seconds. Face south 21 seconds. Repeat until relieved. Thus is the meticulous routine performed by the select few chosen for the honor of guarding the Tomb of the Unknown Soldier, located in Arlington National Cemetery, just outside of Washington, D.C.