We survive in our comfort zone, secure in the belief that our personal income will continue to provide our basic needs of shelter, fire, water and food. In the civilized world, with the necessary insurance, we can be fairly well assured that our lifestyle won't be interrupted. In the event of a major disaster, that assurance is put in jeopardy. Being placed in a less controlled, uncivilized condition place us in a stressful situation that could cause mental or physical trauma and in many cases has caused death. Being prepared with knowledge of how to make your environment more comfortable under a variety of conditions is what survival is all about. A well stocked PSK with the knowledge to use it can turn a potentially traumatic experience into a can-do exercise.