If the Pentagon is quietly prepping every major US base to run 90 days with zero outside power, fuel, water or supplies, the rest of us should take the hint. Basic 90-day food & preps for a family of 4.. Food staples > 50–75 lbs rice > 25–40 lbs dried beans/lentils > 20–30 lbs pasta or oats > 20+ lbs canned meats (tuna, chicken, spam) > 30+ cans mixed vegetables & fruit > 5–10 lbs powdered milk or shelf-stable milk > Cooking oil, salt, sugar, spices, peanut butter Water > Aim for 1 gallon per person per day (360 gallons total) store what you can + get a good filter (Sawyer/LifeStraw) and rain collection Other basics > Manual can opener > First aid kit + 90 days of any meds > Flashlights, batteries or solar/crank lights > Toilet paper, soap, hygiene items > Blankets, warm layers, basic tools > Battery/solar power banks + AM/FM radio Start small and build. Better to have it and not need it.