Led by Lt. Col. Roberts. SOFREP never quotes a hard number but it apparently was up to twelve personnel. They were serving in several capacities, one of which was PSD (from time to time) for Ambassador Stevens
This. It was a few more than that at the height of their employment. Unfortunately they were asked to leave for reasons unknown to me.
When an oda is at an embassy they are not the top dogs concerning anything, to include security. Ultimately State typically calls the shots on who is doing what. In this case they decided to use contract LN security and ditch the ODA. That is pretty standard practice around the world. This was not a standard situation and I certainly think the ODA should have been left intact.
I am a little biased though because I know how stupid and arrogant state can be. That is a little harsh, but that is my experience. It is bureaucracy at its finest. Military guys are pretty damn low on the totem pole at an embassy with all the other agencies around. Nobody really gives a damn what they have to say until SHTF, then everyone wonders why they didn't go all rambo and HALO/scuba/sniper/ranger and rescue all the good guys.
Gates description "cartoonish" perfectly describes how i view the typical rescue scenarios people here think would have been appropriate.
I agree with a lot of the points you made in your other posts. A lot of people will misinterpret what you said because they don't have your experience and the perspective that comes with it.