[Sherman Logan]

If the principal of the school had been armed it could have been stopped before a single child was harmed.

Could being the operative word.

There is unfortunately no assurance that the good guys will always win a gunfight.

Plus, in a surprise attack the attacker always has the advantage. That's why surprise attacks are so effective.

[driftdiver]

I’d rather go down fighting then go down wishing I could fight.

[Bidimus1]

To wit

http://www.frontpagemag.com/2012/dgreenfield/how-an-assistant-principal-with-a-gun-stopped-a-school-shooter/

Dialed 911 but 1911 solved problem first.

[Bob]

But at least the principal would have had the possibilty of stopping the rampage before it became the tragedy that it did. Even some chance of stopping it would have been better than no chance at all.

[CodeToad]

“There is unfortunately no assurance that the good guys will always win a gunfight”

Not being armed is a guaranteed loss. Did that thought never cross your mind?