One of the places in the DC Region, that I believe is a must see for visitors is the Tomb of the Unknown Soldiers located in Arlington Cemetery. Nearby is also the grave of assassinated President JFK. There is a Military guard at the Tomb 24 x 7, regardless of the weather or outdoor conditions. “The Old Guard” as the soldiers who perform this duty, along with Military Ceremonies at funerals is know are a group of dedicated professionals.
There is 2 feet of snow at my house, and it is still snowing with occasional 40-50 MPH gusts, not that far away from the Cemetery. But the lone soldier who marches guard is still out there in the middle of a blizzard. The only accommodation to weather these guys make is they will shorten the shifts marched by the lone guard for the men who march this lonely vigil.
Old Guard maintains vigil at Tomb of the Unknown Soldier at Arlington National Cemetery
It makes no difference to The Old Guard what the weather might be, they continue to stand guard at the Tomb of the Unknown Soldier.
The 3d U.S. Infantry Regiment (The Old Guard) maintain their constant vigil at the Tomb at Arlington National Cemetery.

As a record breaking snow storm hits the Washington DC area Sentinels from the 3d U.S. Infantry Regiment (The Old Guard) continue to stand guard at the Tomb of the Unknown Soldier at Arlington National Cemetery, Va. The Tomb Guards maintain a constant vigil at the Tomb no matter the weather conditions.
(U.S. Army photos by Cpl. Cody W. Torkelson)

1st Lt. Lauran Glover, the first woman drill commander of the U.S. Army Drill Team [USADT], 4th Battalion, 3d U.S. Infantry Regiment (The Old Guard) at a drill performance.