Freeze-dried food is nothing new. As early as the 13th century, the ancient Quechua and Aymara people of Bolivia and Peru pioneered a form of the process by exposing potatoes to the freezing temperatures of the Andes overnight, then drying them in the sun. In 1937, Nestlé used industrial technology to create the world’s first freeze-dried coffee, and in the 60s and 70s, the US military shipped freeze-dried food rations to the troops in Vietnam.
Charles started prepping nearly four years ago after reading Newt Gingrich's introduction to the science fiction novel "One Second After." In the introduction, Gingrich wrote about the possibility of a catastrophic electromagnetic pulse attack. Such an attack, he said, would "throw all of our lives back to an existence equal to that of the Middle Ages ... Millions would die in the first week alone." To hear a public figure like Newt Gingrich seriously lay out what he thought was a plausible scenario convinced Charles that he needed to prepare.
A commercial option for people who choose to take the minimalist route is the Pocket Survival Pak from Survive Outdoors Longer (SOL). This wallet-size packet of miniature multi-use survival items includes duct tape, a pencil, safety pins, seweing needle, nylon thread, aluminum foil, compass, fish hooks and sinkers, magnifying lens, braided nylon cord, stainless steel wire, scalpel blade, signal mirror, fire starter, tinder, waterproof paper, whistle, and a waterproof instructional sheet on the items.
Articles on the subject appeared in small-distribution libertarian publications such as The Innovator and Atlantis Quarterly. It was during this period that Robert D. Kephart began publishing Inflation Survival Letter (later renamed Personal Finance). For several years the newsletter included a continuing section on personal preparedness written by Stephens. It promoted expensive seminars around the US on similar cautionary topics. Stephens participated, along with James McKeever and other defensive investing, "hard money" advocates.
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.
During the dinner rush, the Pizza Hut on Glenstone Avenue is a kinetic juxtaposition: fast-moving people behind the counter, slow-moving people in front of it. Carbohydrate osmosis, I assumed. Earlier that afternoon in the Starbucks down the road, Randall told me Andrew:’s meetup group might be here. He’d been hosting meetups in the gymnasium of the Seventh-day Adventist Church on Belview Avenue, but the church disinvited the preppers after clergy leader and RN Janis Hall witnessed Andrew: deliver a scathing diatribe against modern medicine. But here, judging by the veterans’ hats, overalls and waistband cell phone holsters crowding the salad bar, I knew I was in the right place.
The funny thing about freeze-drying is it’s kind of an exception to the rule. Removing all the water from a floret of broccoli, for example, doesn’t turn it into something new; it simply transforms it into a slightly lesser version of itself. “Once you change the physical structure of something by drying it out all the way,” Allen said, “the texture is never really the same.”
Cell Phones: While cell phones are still not 100 percent reliable in the backcountry, service coverage and the usefulness of smartphones has increased dramatically in the last seven years. While cell phones are still questionably reliable in the backcountry, many adventurers will carry them anyway as they also serve as light cameras and can help with GPS and electronic compass navigation. Today, most of them also work as a flashlight. Regardless, they are worthless if the battery is dead, so plan accordingly.
One measure of survivalism’s spread is that some people are starting to speak out against it. Max Levchin, a founder of PayPal and of Affirm, a lending startup, told me, “It’s one of the few things about Silicon Valley that I actively dislike—the sense that we are superior giants who move the needle and, even if it’s our own failure, must be spared.”
Learn how to use it – What good is a compass if you don’t know how to use it? Not much. How about your Tenacious Tape? Or your GPS locator, or multitool? It’s great to head out into the wilderness with all the appropriate survival gear but if you don’t know how to use it when the time comes it will be as useless as the “g” in “lasagna”. Once you’ve decided what you need and have purchased everything take the time to familiarize yourself with what you have and how it works. Take the GPS locator out into your local state park and practice with it. Practice starting a fire with your emergency fire starter. Buy some extra Tenacious Tape and a cheap raincoat and practice cutting it up and making repairs. Take your survival knife out on a short hike and see what its practical limitations are when it comes to cutting wood etc. You might need a larger one or one with a longer serrated edge. The bottom line is this: make sure you know how to use the survival gear you have before you leave civilization behind and head into the woods.