(L to R) Lt. Col. Andrew Wood, Utah National Guard of the U.S. Army, Eric Nordstrom, Regional Security Officer of the U.S. Department of State, Charlene R. Lamb, Deputy Assistant Secretary for International Programs of the Bureau of Diplomatic Security of the U.S. Department of State, and Patrick Kennedy, Under Secretary for Management of the U.S. Department of State, testify on the Security Failures of Benghazi before the U.S. House Oversight and Government Reform Committee on Capitol Hill in Washington D.C., capital of the United States, Oct. 10, 2012. The attack to the U.S. consulate in Benghazi, Libya, on Sept. 11, 2012 left U.S. Ambassador to Libya Christopher Stevens and three of his staff dead, a tragedy that shocked America and the world. [Xinhua]