Here's my take:
1. Insulate the economy:
Keep your money moving in American based and American staffed companies and businesses that have integrity. Don't give in to MMs fear-mongering conspiracy*. No made in China junk.
Don't forecast (gamble) in any publicly traded AND subsidized companies that deserve to get nuked by their own stupidity, malice and mismangement. If things tighten up that much, they are going to be the first in line unless they are very intimate w/.gov .mil.
2. Insulate yourself:
Forget precious metals (too late). Get durable goods (see above), like guns, washers/dryers, water heaters, ovens, water-filtration, power-gen wind/solar/etc), tools, etc. Smaller durables for trade/barter if it all goes TU.
Improve/reinforce your house/land.
Don't over-save or squirrel cash away, if it goes down that badly, it's only good for wiping your behind or starting a fire. If you can't help but to be a squirrel, then stick away some (additional) long term food stuffs.
Money into hearty and deserving businesses will keep the worst from happening in the first place.
IMHO.
*sparing you the rich details.