WASHINGTON, D.C. (Sept. 11, 2012) Secretary of Defense Leon E. Panetta, left, President Barack Obama and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, render honors during the playing the National Anthem during a ceremony commemorating the 11th anniversary of the Sept. 11, 2001 terrorist attacks on the Pentagon. (U.S. Navy photo by Mass communication Specialist 1st Class Chad J. McNeeley/Released) 120911-D-TT977-133
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/56594044@N06">US Navy Flickr account</a> (MC1 Chad J. McNeeley/U.S. Navy)
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usnavy/7979365941/">President visits Pentagon for Sept. 11 ceremony.</a>