Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, testifies on the Defense Department’s response to the attack on U.S. facilities in Benghazi, Libya, during a hearing before the Senate Armed Services Committee in Washington, D.C., Feb. 7, 2013. Testimony also included the findings of the department's internal review following the attack. DoD photo by U.S. Navy Petty Officer 1st Class Chad J. McNeeley