[henkster]

People need to keep in mind that in these situations the police who respond don’t know a good guy from a bad guy. If you display a weapon for self-defense, the police are likely to think you are a bad guy. They may shoot first and ask questions later and I can’t say I would blame them in an active shooter situation. I sure wouldn’t blame the cops in Dallas, for example.

So yes, by all means, defend yourself with your personal weapon. But be prepared, when the police do show up, to be disarmed and perhaps not politely. It’s better than the alternative.

[JBW1949]

When the police show up, you probably don’t need to have to defend yourself if you are that close proximity with them...

Lay your weapon down and put your hands in the open...Talk calmly...

[Blue Jays]

Very good point, henkster.
It is a scenario that I have often contemplated.
People are eager to post "Pull your own handgun and start blasting!"

The obvious question is blasting at...WHAT?
That random person seen coming down the hallway with a pistol in his/her hand might be another lawfully-armed person.
The optimal situation to me would be to lock a door, barricade it, draw my own weapon inside, and await the all-clear.