Jennifer Henderson, of Winston-Salem, N.C., watches as Col. Jim Market, of the 3rd U.S. Infantry Regiment, also known as The Old Guard, places a flag at the grave site of her husband Sgt. 1st Class Christopher Henderson, who was killed in Afghanistan on June 17, 2007, at Arlington National Cemetery as part of the annual "Flags-In" ceremony in preparation for Memorial Day on Thursday, May 23, 2013, in Arlington, Va. (AP Photo/Evan Vucci) ( Arlington Cemetery Memorial Day )