(Karen Williams-Clarkson lays at the grave of her son, Army Sgt. Joel Clarkson, 23, of Fairbanks, Alaska, in Section 60 at Arlington National Cemetery in Arlington, Va., Monday, May 28, 2012. Clarkson died March 16, 2010, of wounds he sustained during combat operations in Helmand province, Afghanistan. (AP Photo/Cliff Owen))
