Stock up food, start a garden, keep poultry for meat and eggs with enough feed for a year. Get a camera system if you don't have one yet, have multiple monitors in different rooms. Gas masks used to be cheap, but they're not now. n95/99/p100 plus goggles or a full face mask might be cheaper. Get multiple full hazmat suit (again used to be cheap, still not crazy expensive)
Have red zone, yellow zone, green zone protocols for leaving the house. Megaphone to warn people not to approach your property. Start a faction for mutual protection with like-minded neighbors.
Make your property as much of a grey man house as possible. Nothing ostentatious. Make your carry gun look cheap and basic, tacti-cool looks great, but would draw too much attention.
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