At our age and physicality, along with a lack of real world “combat” experience, I’ve been concentrating more on the “reactive” side of the house. I’ve not ignored the “food and water” aspects, as we have “a bit”

put back.
But I’m concentrating more on the ability to deny the “purge supporters” as much as possible. Face facts, how much can a 72 year old man and 70 year old woman in Failing health actually do to stop an “invasion” of our home. Not really that much in the overall scheme of things. BUT for every one we can stop means one less others have to contend with. Just my personal take on things if it all goes south.
Plan to stay below the radar but have the ability to deliver a scorched earth response as much as possible, so you can maintain what you’ve got as long as possible.