Assuming you have to leave your premises immediately for a SHTF situation and all you can take is a Prepacked Backpack and whatever you can carry/put in your pockets, how many days should you have packed for? Assume you can not use your car, cart or anything else just what you can carry. Obviously you are limited in space so should you just pack enough to last for yourself only. The question is for how long? I ask because the more duplicate items I pack the less I can pack for anything else. Obviously food & water comes first. How many days should your Bug Out Bag Last if you don;t know how long you will be away from your home?