Arlington Cemetery, VA: Tomb in memory of the crew of US space shuttle Columbia 1 Feb 2003
Arlington Cemetery, VA: The Tomb of the Unknown Soldier - it 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 Regiment (The Old Guard), headquartered at Fort Myer, Va.
