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Probably and all hell will break loose. Just think if the sanitation system breaks down for some reason. Waste can't be processed. Cities will choke on their own garbage.

Anti-flat-earth detected! lol

Dangit! A minute 36 in before I realized I was tricked into listening to that! No thank you!

Start by slowly extracting as much cash as you can out of your bank. Probably won't be much good other that for food, since most gas pumps are on the grid also. But a pen and paper, along with cash, is all you need to buy food.
Most importantly, invest in high quality concealed weapon holsters and any digital weapon protection devices convert to analog asap.