I never read anything definitive about them being friendlies.
My impression is that they were painted that way by an administration still clinging to the youtube fantasy. I'm not doubting you necessarily...just never read otherwise.
Their behavior on video when retrieving the body did not look friendly to me.
People of Benghazi trying to save Chris Stevens life before his death
Video Purports To Show US Ambassador Dragged From Benghazi Consulate - UPDATES