Another piece of the puzzle? See also Dave Mellon’s images and video in posts #21 &22.
(Broadwell) “Now I don’t know if a lot of you heard this, but the CIA annex had actually had taken a couple of Libya militia members prisoner. And they think that the attack on the consulate was an effort to try to get these prisoners back. So that’s still being vetted.”
http://www.israpundit.com/archives/50224
According to a source on the ground at the time of the attack, the team inside the CIA annex had captured three Libyan attackers and was forced to hand them over to the Libyans. U.S. officials do not know what happened to those three attackers and whether they were released by the Libyan forces.