Tough situation. Don’t let your friend make any modifications to your new place or you very likely will regret it. (1) When people feel powerless in the face of hard times like this pandemic has been, they can react in strange ways as they try to regain some sense of control and safety. I wish I could say your friend will get back to normal soon, but many people who went through the Great Depression were changed by that and never got over it. So there is no guarantee that your former and present roommate is ever going to get back to “normal.” (2) People change. Sometimes people we had things in common with before are no longer a good fit as a friend or roommate. You have to figure out if you can manage your friend’s paranoia, or if it’s even worth dealing with. You may have to cut them loose before they reduce the value and appearance of your home.

What do you need? Guns? Ammo? A generator? Fuel? What kind of help do you need fortifying your house? Lots of us were caught vulnerable by the pandemic -- can't let that happen again!

your house your rules. if he doesn't like it, show him the door.

Kick him out before he can claim squatters rights