I don't know the gentlemans background so maybe it was just blind luck the robbers were in the same area, and there were no bystanders in the line of fire or behind the robbers. But just based on the video it appears the gentleman knew what he was doing and did a great job. He had eyes on both of them. in critiqueing it, he gets high marks for balls and awareness of his targets. I'd have to mark him down for exposing himself so much and not seeking cover to fire from. With one robber he would have been fine engaging and closing in while firing, but with two.. it's a risk. Finally, after the thugs fled I would advise him to remain vigilant at the doorway as one might double back for some insane reason and want to come in blasting. Unlikely, but why risk it. Overall, well done.