Police are not required to have permits. Their badge is their permit.
So, some of those houses not labeled on the map belong to law enforcement.
This is where, and another reason why, that “shall not be infringed” part of the 2nd Amendment comes in.
I do think some states may (possibly) be able to justify a right to controll via a training/permitting process, of their citizens ability to “openly brandish” lethal weapons, specifically any visable, holstered handguns and knives.
Iffy, but then again, whenever I encounter uniformed police officers openly carrying weapons at the corner gas station or grocery store, I tend to become hyper-aware of personal space separation issues, and not give them any excuse to attack me.
BTW, quite a few of them would be easily disarmed and attacked with their own weapons, if I (little old lady, law abiding me) was intent on committing such a crime.