ARLINGTON, VA - MAY 22:  Members of the 3rd U.S. Infantry Regiment, 'The Old Guard,' place flags at grave sites during the 'Flags-In' ceremony May 24, 2014 at Arlington National Cemetery in Arlington, Virginia. A small American flag was placed one foot in front of more than 220,000 graves in the cemetery to mark the Memorial Day.  (Photo by Mark Wilson/Getty Images)