National Security
Tuesday
A TSA worker searches a bag at Oakland International Airport. Justin Sullivan/Getty Images hide caption
Monday
A Yemeni soldier operates at the checkpoint on the northern entrance of the capital, San'a, on Jan. 13. Nasser Nasser/AP hide caption
Thursday
Wednesday
FBI Director Robert Mueller testifies Wednesday on Capitol Hill on the bureau's counterterrorism efforts. During the hearing, Senate Judiciary Committee Chairman Patrick Leahy confronted Mueller on a report that was released by the Justice Department's Office of the Inspector General saying the FBI illegally obtained thousands of Americans' telephone records during the Bush administration. Mandel Ngan/AFP/Getty Images hide caption
Homeland Security Secretary Janet Napolitano (L) testifies during a Senate Commerce, Science and Transportation Hearing. Ann Heisenfelt/Getty Images hide caption
Umar Farouk Abdulmutallab, here in Milan, Mich., was charged in federal court Dec. 28, 2009, with trying to detonate an explosive device on a Dec. 25 flight from Amsterdam to Detroit. U.S. Marshals Service/AP hide caption
Monday
Saturday
Thursday
A man stands inside a backscatter scanner at Ronald Reagan Washington National Airport. Backscatter technology uses low-level X-rays to detect hidden metallic and nonmetallic objects, such as weapons and explosives, without physical contact. Chip Somodevilla/Getty Images hide caption
Tuesday
A gaping hole mars the port side of the USS Cole after a terrorist bomb exploded and killed 17 U.S. sailors during a refueling operation Oct. 12, 2000, in the port of Aden, Yemen. U.S. Navy hide caption