Still Vigilant at the Tomb of the Unknown Soldiers Despite Hurricane Irene

A lone Tomb Sentinel, 3d U.S. Infantry Regiment (The Old Guard), walks his tour in humble reverence during Hurricane Irene in Arlington National Cemetery, Va., August 27, 2011.

Since taking over the mission on April 6, 1948, Tomb Sentinels from the Army's 3rd Infantry Regiment's "The Old Guard" have guarded the Tomb for 24 hours a day, 365 days a year regardless of the weather. CBS News