Self-defense has many different aspects, and what you need to know depends on your circumstances. If you operate in high-risk environments, you need some Crucible time. If your assignment entails navigating dangerous roads, a crash course in Survival Driving is in order. Maybe you just want to explore how other warriors formulated their distinctive approaches to self-defense, such as Bob Kasper, Pat Miletich, W.E. Fairbairn, or Charles Nelson.