The problem with most of you prepper types is that you are way too early and wasting your energy. Yes of course I know what you’re all thinking is that we all must be prepared always and yes that is after all the whole point. But all things considered, past present and future .. technology is the real enemy and it has not yet fully evolved. Keep this date in mind and any years that are multiples of 9, (9-18-2027), have enough fuel to make it to the dessert, remove the battery and SIM cards from devices, bring dried food and chlorinated water water and dig in deep, good luck.
For global catastrophic risks the costs of food storage become impractical for most of the population  and for some such catastrophes conventional agriculture would not function due to the loss of a large fraction of sunlight (e.g. during nuclear winter or a supervolcano). In such situations, alternative food is necessary, which is converting natural gas and wood fiber to human edible food.
With goTenna you use a simple smartphone messaging app as a platform for sending SOS messages along with your handheld hunting GPS coordinates should you need emergency help. You can also use it to chat with emergency services so they know your exact condition and can prepare accordingly. It’s off-grid survival gear at its best and could be the difference between life and death.
Bossy, know-it-all, and super preppers are dangerous to everyone that is part of a group of people trying to help each other survive. Too often preppers tend to undervalue someone who may not fit the mold they are trying to fill. They discount someone not physically as capable without realizing wisdom and common sense gathered over a lifetime can often outweigh and/or supplement their own preps. Often long-term survival requires skills that are quiet, less visible, and more subtle but will keep you comfortable longer. The end goal is re-establishing normalcy in society.
Earthquakes, tornadoes, and hurricanes can cause you to leave your home or even be trapped there. Roads could be blocked due to fallen trees, power lines, or even damaged earth from the natural disaster. Rescue crews can not be in all places at once. You may have to wait it out for quite a while before its over. You won't be able to go to the store or to the corner market.