U.S. President Barack Obama (C) lays a wreath at the Pentagon memorial for the September 11 attacks, as first lady Michelle Obama and U.S. Secretary of Defense Leon Panetta (R) look on, during the 11th anniversary of the September 11 attacks, at the Pentagon near Washington, September 11, 2012. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS ANNIVERSARY MILITARY DISASTER)