The cameraman a couple mins later in the longer version video says "the guy who shot ran off". He knew someone was just shot and murdered AT LEAST at that point but still acts as if it was nothing. The guy telling him you have to tell the cops you have footage of it acts like a normal person that can't believe what just happened and to turn it over to the cops. To me, the cameraman is acting like he knew everything that was going to happen and did happen. I mean, who doesn't freak out even a little after watching someone get murdered?