Changing of the Guard
The Tomb of the Unknowns (also known as the Tomb of the Unknown Soldier) is guarded 24 hours a day, 365 days a year, and in any weather by Tomb Guard sentinels. Sentinels, all volunteers, are considered to be the best of the elite 3rd U.S. Infantry (The Old Guard), headquartered at Fort Myer, Va.

Write up from www.arlingtoncemetery.org