From CBS:

CBS News has learned that congressional investigators have issued a subpoena to a former top security official at the US mission in Libya. The official is Lt. Col. Andy Wood, a Utah National Guard Army Green Beret who headed up a Special Forces “Site Security Team” in Libya.

Lt. Col. Andy Wood led a 16-member Special Forces site security team responsible for protecting U.S. personnel in Libya. The subpoena compels Lt. Col. Wood to appear at a House Oversight Committee hearing next week that will examine security decisions leading up to the Sept. 11 Muslim extremist terror assault on the U.S. compound at Benghazi. U.S. Ambassador Christopher Stevens and three of his colleagues were killed in the attack.

Lt. Col. Wood has told CBS News and congressional investigators that his 16-member team and a six-member State Department elite force called a Mobile Security Deployment team left Libya in August, just one month before the Benghazi assault. Wood says that’s despite the fact that US officials in Libya wanted security increased, not decreased.

Who could blame them? (more at the link)