This would be a good time to invest in enhanced home alarm systems. It's not going to be enough to have door, window and inside alarms, you'll want to know when anyone is anywhere on your property. (If you're technically inclined, search on 'Hubitat'.)
Buying the hardware to put up barbed wire fences would be a good step (get it while it's cheap). It would be good to understand the grades/durability of different barbed wire products. Generally the best barbed wire can be obtained at agricultural co-ops.
Make sure vehicles are secured against catalytic converter theft. (I had the local utility company install a new street light beside my outdoor parking area, which helped greatly.)
Make sure you not only have weapons, but ammo, magazines, speed-loaders, and the gear and ability to perform basic cleaning of those weapons.
Get metals. If the dollar hyperinflates, $10k in metals today might pay off a mortgage tomorrow. And an oz of silver might purchase a surprising amount of food.
“Make sure vehicles are secured against catalytic converter theft. “
Electric vehicles don’t need them................