Unfortunately, some outdoor enthusiasts find themselves being threatened by nefarious people or dangerous animals. This leads some to keep a weapon or self-defense tool in their survival kit, in order to be better prepared for a worst-case scenario. Your self-defense tool may take the form of a knife or gun, but be sure to consider less-than-lethal items too. This would include things like stun guns, pepper spray, and telescoping batons. Just be sure to follow all local laws and regulations before packing any type of weapon or self-defense tool in your survival kit.
Firearms instructor and survivalist Colonel Jeff Cooper wrote on hardening retreats against small arms fire. In an article titled "Notes on Tactical Residential Architecture" in Issue #30 of P.S. Letter (April, 1982), Cooper suggested using the "Vauban Principle", whereby projecting bastion corners would prevent miscreants from being able to approach a retreat's exterior walls in any blind spots. Corners with this simplified implementation of a Vauban Star are now called "Cooper Corners" by James Wesley Rawles, in honor of Jeff Cooper. Depending on the size of the group needing shelter, design elements of traditional European castle architecture, as well as Chinese Fujian Tulou and Mexican walled courtyard houses have been suggested for survival retreats.
Others featured on Doomsday Preppers are more out there — literally. Robert and Debbie Earl, retired Florida chicken farmers, worry about the seas rising. So they are building a home constructed of old tires and sand-filled bottles near Alpine, Texas. Robert Earl describes himself as "Mad Max meets Rube Goldberg with a little bit of Al Gore thrown in."
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