Arlington Cemetery (25 images)

Headstones are decorated with holiday wreaths at Arlington National Cemetery in Arlington, Virginia on December 21, 2007. (UPI Photo/Alexis C. Glenn)

An older veteran salutes as members of the military's Honor Guard passes by during a wreath laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on in Arlington, Virginia, on Memorial Day, May 28, 2007. (UPI Photo/Roger L. Wollenberg)

Guests watch as U.S. Army Honor Guard soldiers participate in "The Changing of the Guard" ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on in Arlington, Virginia, on Memorial Day, May 28, 2007. (UPI Photo/Roger L. Wollenberg)

U.S. Army Honor Guard soldiers participate in "The Changing of the Guard" ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on in Arlington, Virginia, on Memorial Day, May 28, 2007. (UPI Photo/Roger L. Wollenberg)