(L to R) US Homeland Security Secretary Janet Napolitano; Federal Bureau of Investigations (FBI) Director Robert Mueller; and director of the National Counterterrorism Center Michael Leiter, testify before the Senate Homeland Security and Governmental Affairs Committee during a hearing entitled 'Eight Years After 9/11: Confronting the Terrorist Threat to the Homeland' on Capitol Hill in Washington, DC, USA 30 September 2009