While Wayne laPierre was getting all flecked with spittle, in PA there was another "mass" shooting (I'm not sure if 3 people plus the shooter still qualifies for "mass" shootings, maybe it's like the $1 menu of mass shootings). Three state troopers were injured in the melee. While not all the facts are in, yet, if only there were armed guards available to stop the rampage… oh, wait.
Look, if you have combat shooter experience/training, sure, I'm somewhat okay with that. But if you're not putting 200 rounds down target at least every other month, you aren't prepared.
The whole fantasy of the random armed citizen putting down a determined shooting is nonsense. Columbine HS had an armed guard. Virginia Tech had a whole police force. Don't believe me? Okay, ask your local policeman if they support the concept of citizens returning fire. As for armed guards, guess who would be the first victims.