Good guys with guns

Hell yeah !

You know that is an unanswerable question. The answer is perhaps. The "good guy" would likely not be recognizeable as such diverting interest from the police, might not be able to put the bad guy down and might actually shoot an innocent bystander. Before the CDC was forced to shut down their studies, they had data suggesting that those with weapons in their homes were more likely to become victims of gun violence than those without weapons.

the duration of a mass shooting is determined by the time it takes for another gun to arrive!...