Arlington , Virginia ( CNN ) -- President Obama lays a wreath at Arlington National Cemetery 's Tomb of the Unknowns . Obama tells Americans to honor the values of fallen servicemen and women . Comment: The Obamas host Gold Star families at the White House .
President Obama lays a wreath at Arlington National Cemetery 's Tomb of the Unknowns . Obama tells Americans to honor the values of fallen servicemen and women . Comment: The Obamas host Gold Star families at the White House .