Photo Gallery: Sept. 11 Anniversary 13/33

Republican presidential candidate and Texas Governor Rick Perry lays a wreath during a memorial service at the Texas State Cemetery Twin Towers Monument in Austin, Texas, Sunday, Sept. 11, 2011.  The Twin Towers Monument is built from steel beams salvaged from the World Trade Center rubble. America observed memorial services on the 10th anniversary of the Sept. 11, 2001 terrorist attacks.   (AP Photo/Erich Schlegel)