I have wondered that myself. My guess is that they have been told not to talk to anyone other than official investigators until told otherwise. We know from the Congressional hearings and the news media that the surveillance video is classified. Same with the drones’ video. I am not very knowledgeable about communications but I have wondered what the tower in Benghazi Gates Part 1 was for. If it is communications I have never seen one like it before. Also the gray building was not discussed in the Congressional hearing.
Yikes.. Just occurred to me, when was that Secret Service agent murdered, uh urr, I mean committed suicide? Uhhh, 5 days BEFORE the election? Perhaps he knew of 0bamas whereabouts and activities the day of the terrorist attack?