Hell, an average concealed carry person would have found a personal moral obligation to go in and address the shooter. I guess you are unaware of the countless times average citizens grab or draw their firearms in defense of a situation... they never... I mean never... just get on the damn phone and set up a a freakin’ perimeter. What a disgrace!
Like the guy who took out that mall shooter is Seattle a few years back - he took hi hand gun and went up against an AR
In certain situations, it’s feudal to enter the fray.
Sure people with concealed carry enter into situations all the time. When the circumstances seem reasoned, they do it.