A restraining order is obviously going to be done, but that doesn't stop him from coming there when they're sleeping.

Security is another option I will mention to them. An alarm of some kind to at least warn them if something happens.

I was thinking one of those systems where if the alarm goes off, a call automatically goes to the police or something. That'd be good too.

Using a firearm is a last resort for me, but if I have to, I won't hesitate if he comes around here.