Looking back at 9/11

<div class="meta "><span class="caption-text "> Visitors look out over the crash site of United Flight 93 at the temporary Flight 93 memorial in Shanksville, Pa., Saturday, Sept. 11, 2010. &#40;AP Photo&#47;Gene J. Puskar&#41;</span></div>
September 10, 2011 11:39:42 AM PDT