If I am in my home state, minimally, I have a handgun w/extra ammo on my person and a 12ga and fully loaded vest in the trunk. My place of employment could be anywhere, so my priority would be to get to my family and make them safe. Here in VT, there are enough alternate routes so that gridlock would be difficult to bring about.
If I was working out of state, I would still have the 12 bore as a minimum. I also carry extra everything, so hunkering down until things were clear would not be a problem. I was actally in another state a few years back when some "unpleasantness" occurred. My car was in a parking garage, so I loaded the beast and sat on my car overnight.
"Those who dance are thought mad by those that don't hear the music."