An armed Metropolitan Transportation Authority police officer stands guard in New York's Grand Central Station on Monday, May 2, 2011. Security was heightened as a result of the announcement of the ... more 
An armed Metropolitan Transportation Authority police officer stands guard in New York's Grand Central Station on Monday, May 2, 2011. Security was heightened as a result of the announcement of the killing of Osama Bin Laden. less 
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Associated Press | Photo By Stephen Chernin
Mon, May 2, 2011 9:59 AM EDT