Mueller And Napolitano Testify Before Senate On Terrorist Threat In U.S.
WASHINGTON - SEPTEMBER 30: National Counterterrorism Center Director Michael Leiter testifies before the Senate Homeland Security and Governmental Affairs Committee about the domestic terror threat on Capitol Hill September 30, 2009 in Washington, DC. FBI Director Robert Mueller testified during the hearing that he did not believe that plot by accused terrorist bomb-maker Najibullah Zazi poses an imminent threat. (Photo by Chip Somodevilla/Getty Images)
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