NEW YORK, NY - SEPTEMBER 09: People walk underneath a New York Police Department mobile observation tower outside of Ground Zero on September 9, 2011 in New York City. The White House announced on ... more 
NEW YORK, NY - SEPTEMBER 09: People walk underneath a New York Police Department mobile observation tower outside of Ground Zero on September 9, 2011 in New York City. The White House announced on September 8, 2011 they had received "credible" but "unconfirmed" reports of a planned terrorist attack surrounding the 10th anniversary of the September 11, 2011 terrorist attacks. (Photo by Andrew Burton/Getty Images) less 
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Getty Images | Photo By Andrew Burton / Getty Images
Fri, Sep 9, 2011 2:56 PM EDT