What was the CIA Doing in Benghazi?

Sources tell CNN dozens of people working for the CIA were on the ground the nigh of the attack on the U.S. consulate in Benghazi, Libya “and that the agency is going to great lengths to make sure whatever it was doing, remains a secret.”

“The CIA is involved in what one source calls an unprecedented attempt to keep the spy agency’s Benghazi secrets from ever leaking out.”