But that's not the real world. In the real world there was a concealed carry guy there when Giffords and others were shot. Yet he didn't stop the shooter. In fact he almost shot the wrong person. Now that's reality.
Almost only counts in horseshoes, hand grenades and atom bombs. The fact is the guy didn't shoot the wrong person and another fact is police are guilty more often than civilians when it comes to shooting the wrong person.
It's interesting that you guys are focusing on the almost shot the wrong person. The main point was that he didn't stop the shooter and that will more than likely be the case in these situations with all the chaos. This gentleman was in fact a responsible gun owner when he didn't shoot.
1 guy out of position in a crowd, kind of like the cops just a few blocks away from the Aurora theater, help isn't always exactly where it is needed. The fact the you felt compelled to restate the obvious just shows a lack of knowledge on your part.