Get yourself a firearm and learn how to use it.
The Wife and I live out a bit from the city. We have three very loud(but very cuddly) dogs. They let us know whenever someone is around. I carry a Glock model 27 .40 caliber(loaded w jacketed hollow points) on my right hip 12 hours a day. The rest of the time, the wife and myself are within arms reach of either a 12 gauge shotgun loaded w double 00, or the Taurus Judge loaded with .410 personal defense rounds.
Before someone mentions that they think I am paranoid or psychotic,
you must realize that we live within 5 miles of not one, but TWO state prisons, AND a juvenile halfway house for drug offenders. I am also sandwiched in between two major North/South highways, and the heroin trade is terrible in the small town to our North.
We have a very good possibility of the SHTF at anytime.
Better to have it and not need it, than to need it and not have it.