FBI director Robert Mueller, left, talks with National Counterterrorism Center Director Matthew Olsen, on Capitol Hill in Washington, Tuesday, Sept. 13, 2011, prior to testifying before the Senate ... more 
FBI director Robert Mueller, left, talks with National Counterterrorism Center Director Matthew Olsen, on Capitol Hill in Washington, Tuesday, Sept. 13, 2011, prior to testifying before the Senate Homeland Security and Governmental Affairs Committee hearing on the terror threat to the US. (AP Photo/Evan Vucci) less 
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Associated Press | Photo By Evan Vucci
Tue, Sep 13, 2011 2:44 PM EDT