Obama and Horst stand at attention after laying a Memorial Day wreath at the Tomb of the Unknowns at Arlington Cemetery in Arlington, Virginia

 
Obama and Horst stand at attention after laying a Memorial Day wreath at the Tomb of the Unknowns at Arlington Cemetery in Arlington, Virginia
U.S. President Barack Obama (L) and Commander of the Military District of Washington U.S. Army Major General Karl Horst (2nd L) stand at attention after laying a Memorial Day wreath at the Tomb of the Unknowns at Arlington Cemetery in Arlington, Virginia, May 30, 2011. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS MILITARY)