People panic and make fatal errors under crisis when they do not have enough information and do not know what to do. The most critical prep is: having a plan: knowing now what you will do when "it" happens. Prepping may be described as having a structured plan based on an adequate scope and depth of information. Having a comprehensive plan... in writing... becomes your critical survival tool. That plan needs to be written out on old-fashioned paper and indexed by topic in a notebook that everyone on your team can access.