Former President George W. Bush pauses before a after he lays a wreath at the Pentagon in Washington for the 10th anniversary of the Sept. 11 attacks, Saturday, Sept. 10, 2011. Pictured at rear, left to right: former Defense Secretary Donald Rumsfeld, Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, and Defense Secretary Leon Panetta. (AP Photo/Charles Dharapak)