The accompanying story reports that former Tulsa County reserve deputy, Brian Pounds shot Rick Treadwell in the finger. That Treadwell was only shot in the finger is nothing short of miraculous. The video shows Pounds racking the slide to check, supposedly to check for an empty chamber, without first removing the magazine from the gun. That action subsequently loaded a round into the chamber. He then points the gun at another person. And pulls the trigger.
It's only four rules. It shouldn't be that hard to keep straight.