The list author says: "Here's some recommended items for a 72 hour or "Bug Out" bag. Most people will probably assemble such a bag one piece at a time rather than going out and purchasing everything in one day. With that in mind, I've done my best to assemble the items in the order one would want to purchase them. Moving from the essentials of mobility, food, water, and shelter. To items that make these essentials a little easier while adding weight and expense, to items that will make a few nights in survival mode a little more comfortable, and finally, items that will assist rescuers in finding you. Obviously, depending on your climate and surroundings, some items may be more important than the order I have listed them."