Members of the Flag Fold Detail of the 3rd United States Infantry "The Old Guard" render honors to the Pentagon garrison flag during a "Retreat Ceremony" hosted by the Smithsonian's National Museum of American History, Thurs., Sept. 7, 2006, at the museum in Washington, D.C. The flag, which was first unfurled from the roof of the Pentagon the day after the Sept. 11, 2001 terrorist attacks, has been on view in the museum since September 2002. Photo Credit: Richard Strauss