Goodness sakes alive; imagine that. ANOTHER LOSER, this one with strong views about something or other, gets himself a quality semi-automatic handgun with some spare magazines full of ammo and heads out for what looked (to him) like another surefire mass shooting. A SECURITY GUARD (UNARMED no less) heroically ended the attempt.
Now, I will agree that UNARMED security is probably only a wee bit better than having no security at all (unarmed security proved to be worthless during the Colorado Theater massacre). HOWEVER, I am convinced that the presence of armed security can change the minds of many armed miscreants, and minimize the effectiveness of those hell-bent on going through with their delusional plans.