TLDR. Some of the Mall Ninja's comments seem to have been prophetic though:
> What good are the cops going to be if a shooter shows up at your
> workplace??? How about your kid’s school, remember Columbine? I’ll
> tell you what the cops will do, call the SWAT team and screw
> around trying to locate the front door for 30 minutes, ...
The original "Mall Ninja" story unironically talked about wheeling around in a golf cart. It's a short stone's throw to a segway from there.
https://lonelymachines.org/mall-ninjas/