Maybe brown shirt man activated (pulled the trigger on) the camera gun behind which can be seen firing the shot in slow motion. Brown shit man got the hand signals from the white hat man and the dark shirt man to the right of the stage. A white shirt man can be seen further back on the right appearing to pull or pump something between his hands at the exact time brown shirt man fiddles with his sleeve as the shot is fired.
Maybe there were others not so close, the white shirt man was far behind the barrier, and several others come into view after the event. Brown shirt man rushed to render aid and appears to take something from blue shirt man who jumped over the barricade also to render aid. Maybe blue shirt man handed brown shirt man keys to the SUV that brown shirt man drives away to the hospital. Other suspicious people include the guy who took down the camera gun and grey hat man packing a weapon. This on top of Zin and all the GPS data of people at the patsy house, and the aircraft registered to a donor and airport irregularities maybe look like it was sophisticated but sloppy hit maybe involving the security staff and state and local intelligence. The Utah government response maybe looked like it was coordinated.