Being a full time survival instructor I have the opportunity to truly test knives in the field and see how the hold up in not only professionals hands but amateurs as well. This list is my favorite blades of the last few years and have all proven to hold up extremely well in the field under harsh conditions. We run the longest outdoor wilderness survival programs in the country, and during these courses we see a lot of knives fail. Our philosophy at SIGMA 3 Survival School is