You don't even have to stealth prep; just stock up on basic foodstuffs, water, medical supplies, etc.
If you're on medication or family members are, stock up on those as well. PLAN for deterioration.
Think “Katrina” and remember what happened when the Low Information voters ran amok for two or three weeks. And then set about doing little things to ensure your own survival in THAT level of chaos. Have enough ammo and guns on hand - self-defense, hunting if necessary, etc, and make sure your family knows how to handle them. Have fresh water. How much does a couple of cases of bottled water cost every week? Buy two or three cases every time you go to the supermarket. Buy canned meats - Spam, Underwood ham and chicken spread, etc. that stuff lasts months. Canned veggies.
All of this can be done right up front. Storing it? Clean out your garage of unnecessary junk, get some Sterilite plastic storage bins, and stack them up.
Gasoline, kerosene, oil lamps... all of those things are necessary as well.
There's all sorts of things you can do to be prepared.
Most important, make sure your family is on the same page with it.
“Those that understand and embrace that simple idea - DO survive. And win.”
While we are limited in funds, space and location, I’m still doing what I can. And, I may not survive when the SHTF, but I can promise you I’ll go out fighting.