OK. I must put up a little resistance here, Dan. I worked in video production running a camera. When you're doing a segment, the talent is intently focused on what is (from the camera man's perspective) in front of the camera. Someone could walk behind the talent and make bunny ears, and she wouldn't notice. Think of their attention being narrowly focused, like being in an opaque bubble.
If you watch the videos, one of them shows her glancing sideways at the alleged 'shooter'. There are no other people there, he walks up down a long walkway and stands right next to them, close enough to tough the cameraman, raises the gun, lowers it, waits, raises it again and the 'shoots'.
The shooter was perpendicular to the camera-talent angle. None of them, cameraman or talent, would have noticed anyone walking up because everyone is self-conscious in front of the camera (and in the case of the cameraman, he's looking through the viewfinder) – until the sound of that first shot.
If you watch the videos, he was standing right next to the cameraman, almost directly in front of the interviewee. The reporter glances at him. Huge black guy that she knew from the station. Fired one year before. Raises the gun, realizes the camera isn't on the interview, lowers it, waits for the cameraman, raises it again and 'shoots'.
Lady with 3 shots to the chest squeals and runs away rather than falling and spewing blood.
