One more from me and then I have to leave for a bit - and so hope to come back to more news!
Regarding his Mom, the gun, etc. they have said in an earlier MSM report that she worked for Shasta County LE for awhile too. I assume if she needed her firearm for that job, or if she decided she wanted to continue to carry one, she would have gotten a CA permit. As far as I know the rule isn't that can't have a gun that you bought in another state, just that you have to register for a CCW in California as well. Also, I got the impression she lives in California now, based on the fact that he went to her house to steal stuff. Unless she has residences in both Florida and CA?
Also this is just personal experience but I've got some acquaintances who live generally in that area (Redding etc.) and they are so heavily armed - and so are most of their neighbors - that it kind of freaks me out. I have no idea if all their guns are registered but it wouldn't surprise me if they're not. Even in my own neighborhood, which is about 2 hours away and much more of a suburban quiet area, a bunch of the guys were hanging out in the garage with my husband one night and I was rather shocked to find out that at least 50% of our neighbors have guns in the house. I would have guessed maybe ONE of them did. So, again just IME, I think it's probably pretty true that a lot more people have guns than a lot of us may realize.