First Thanks Blast for keeping this open. My intent wasn't to play the internet commando game. As a LEO I've had this as a table top exercise presented just before starting active shooter training. That time it started with "Your off duty and..." then the senario.

Night Hiker is dead nuts on with his assessment of the problem, namely how do you get your family out of this mess alive.

What is the first rule of a gunfight? Be somewhere else when it happens!

I listed the exact same senario we were given, assuming that as preparedness people your situational awareness was turned on.