House Select Committee on Benghazi Chairman Rep. Trey Gowdy, R-S.C., demands answers of witnesses from the State Department and the CIA, as it holds its third public hearing to investigate the 2012 attacks on the U.S. consulate in Benghazi, Libya, where a violent mob killed four Americans, including Ambassador Christopher Stevens, Tuesday, Jan. 27, 2015, on Capitol Hill in Washington. (AP Photo/J. Scott Applewhite)