Disasters are a fact of life.
Since disasters are an inescapable part of living, survival knowledge and preparation become a common sense insurance policy. Most disasters and emergencies have a common core of resultant problems. Preparation for one kind of anticipated emergency can greatly enhance your chances of survival in other disaster situations. California alone averages almost 5000 feeble but feelable quakes a year. You never know which of these quakelets will be strong enough to do some damage - or be such a monster that lives will be violently disrupted for a period of time.