An honor guard taking part in a wreath laying ceremony walks past the gravestones at Arlington National Cemetery outside Washington

 
An honor guard taking part in a wreath laying ceremony  walks past the gravestones at Arlington National Cemetery outside Washington
A member of the honor guard taking part in a wreath laying ceremony by Britain's Prime Minister David Cameron walks past the gravestones at Arlington National Cemetery outside Washington, July 21, 2010. REUTERS/Jim Young (UNITED STATES - Tags: MILITARY)