NEW YORK, NY - SEPTEMBER 09: A police officer checks the photo identification of a driver on Trinity Place in preparation for the 10th anniversary of the September 11, 2001 terrorist attacks on ... more 
NEW YORK, NY - SEPTEMBER 09: A police officer checks the photo identification of a driver on Trinity Place in preparation for the 10th anniversary of the September 11, 2001 terrorist attacks 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 anniversary. (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