Director of National Intelligence James R. Clapper (left), accompanied by Army Gen. Keith B. Alexander, National Security Agency director, testifies on Capitol Hill in Washington on Wednesday, Oct. 2, 2013, before the Senate Judiciary Committee oversight hearing on the Foreign Intelligence Surveillance Act. U.S. intelligence officials say the government shutdown is seriously damaging the intelligence community's ability to guard against threats. (AP Photo/Evan Vucci)

Photo by: Evan Vucci

Director of National Intelligence James R. Clapper (left), accompanied by Army Gen. Keith B. Alexander, National Security Agency director, testifies on Capitol Hill in Washington on Wednesday, Oct. 2, 2013, before the Senate Judiciary Committee oversight hearing on the Foreign Intelligence Surveillance Act. U.S. intelligence officials say the government shutdown is seriously damaging the intelligence community's ability to guard against threats. (AP Photo/Evan Vucci)