House Homeland Security investigates terrorist threats in Washington

Left to right, Former Rep. Lee Hamilton, D-Ind., of the Bipartisan Policy Center and former co-chairman of the 9/11 Commission, Frances Townsend, former counterterrorism adviser to President George W. Bush, Peter Bergen, New America Foundation scholar, and Evan Kohlmann, Flashpoint Partners founder, testify during a House Homeland Security Committee hearing titled "Threats to the American Homeland after Killing Bin Laden: An Assessment" on Capitol Hill in Washington on May 25, 2011. UPI/Kevin Dietsch