England's Prince Harry places a wreath with the help of a member of The Old Guard during a wreath-laying ceremony at theTomb of the Unknowns at Arlington National Cemetery in Arlington, Va., Friday, May 10, 2013. Standing left is Major Gen. Michael Linnington. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

England's Prince Harry places a wreath with the help of a member of The Old Guard during a wreath-laying ceremony at theTomb of the Unknowns at Arlington National Cemetery in Arlington, Va., Friday, May 10, 2013. Standing left is Major Gen. Michael Linnington. (AP Photo/Carolyn Kaster)