The family of Marine Sgt. Sean Callahan of Warrenton, Va.,, who was killed in Afghanistan, look on during a burial service at Arlington National Cemetery in Arlington, Va., Monday, May 2, 2011. From ... more 
The family of Marine Sgt. Sean Callahan of Warrenton, Va.,, who was killed in Afghanistan, look on during a burial service at Arlington National Cemetery in Arlington, Va., Monday, May 2, 2011. From left are, brother Cpl. Daniel Callahan, sister Melodie Callahan, sister Heather Callahan, father Patrick Callahan, and mother Janet Callahan. less 
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Associated Press | Photo By Evan Vucci
Mon, May 2, 2011 1:36 PM EDT