A burned car is seen on Wednesday, Sept. 12, 2012, after an attack the day before on the U.S. Consulate in Benghazi, Libya, by protesters angry over a film that ridicules Islam's Prophet Muhammad. The U.S. ambassador to Libya and three other Americans were killed. (AP Photo/Ibrahim Alaguri)

Photo by: Ibrahim Alaguri

A burned car is seen on Wednesday, Sept. 12, 2012, after an attack the day before on the U.S. Consulate in Benghazi, Libya, by protesters angry over a film that ridicules Islam's Prophet Muhammad. The U.S. ambassador to Libya and three other Americans were killed. (AP Photo/Ibrahim Alaguri)