** FILE ** U.S. envoy J. Christopher Stevens attends meetings on April 11, 2011, at the Tibesty Hotel in Benghazi, Libya, where an African Union delegation was meeting with Libyan opposition leaders. (Associated Press)
** FILE ** U.S. envoy J. Christopher Stevens attends meetings on April 11, 2011, at the Tibesty Hotel in Benghazi, Libya, where an African Union delegation was meeting with Libyan opposition leaders. (Associated Press)
** FILE ** U.S. envoy J. Christopher Stevens attends meetings on Monday, April 11, 2011, at the Tibesty Hotel in Benghazi, Libya, where an African Union delegation was meeting with Libyan opposition leaders. (AP Photo/Ben Curtis)
** FILE ** In this April 11, 2011, photo, then-U.S. envoy Chris Stevens attends meetings at the Tibesty Hotel where an African Union delegation was meeting with opposition leaders in Benghazi, Libya. An independent review board is set to reveal its findings on the Sept. 11 attack in Libya that killed a U.S. ambassador and three other Americans, a report the administration hopes will bolster its assertion that diplomats took all reasonable measures to anticipate and respond to the violence, and end months of finger-pointing and recriminations over whether the deaths could have been avoided. (AP Photo/Ben Curtis, File)
** FILE ** In this April 11, 2011, photo, then-U.S. envoy Chris Stevens attends meetings at the Tibesty Hotel where an African Union delegation was meeting with opposition leaders in Benghazi, Libya. An independent review board is set to reveal its findings on the Sept. 11 attack in Libya that killed a U.S. ambassador and three other Americans, a report the administration hopes will bolster its assertion that diplomats took all reasonable measures to anticipate and respond to the violence, and end months of finger-pointing and recriminations over whether the deaths could have been avoided. (AP Photo/Ben Curtis, File)
** FILE ** U.S. envoy J. Christopher Stevens attends meetings on April 11, 2011, at the Tibesty Hotel in Benghazi, Libya, where an African Union delegation was meeting with Libyan opposition leaders. (Associated Press)
**FILE** U.S. envoy Chris Stevens speaks April 11, 2011, to local media at the Tibesty Hotel where an African Union delegation was meeting with opposition leaders in Benghazi, Libya. The U.S. ambassador and three other Americans were killed in an attack on the U.S. consulate in Benghazi by protesters angry over a film that ridiculed Islam's Prophet Muhammad. (Associated Press)
**FILE** U.S. envoy Chris Stevens (center), accompanied by British envoy Christopher Prentice (left), speaks April 11, 2011, to Council member for Misrata Dr. Suleiman Fortia (right) at the Tibesty Hotel where an African Union delegation was meeting with opposition leaders in Benghazi, Libya. (Associated Press)
**FILE** U.S. envoy Chris Stevens speaks April 11, 2011, to local media at the Tibesty Hotel where an African Union delegation was meeting with opposition leaders in Benghazi, Libya. The U.S. ambassador and three other Americans were killed in an attack on the U.S. consulate in Benghazi by protesters angry over a film that ridiculed Islam's Prophet Muhammad. (Associated Press)
