LOL I love this concept. you have people that are "prepping for a dooms day" and most of their equipment are dependent on modern things batteries, propane fuel ect ect. If you really wanna prep for Dooms day. You need to learn to do things like hunt,fish, grow sustainable crops, make your own cloths, get some pretty advanced medical and wound care training, learn metal work ect ect aka join the Boyscout's.