In all societies, the normal flow of life is occasionally interrupted by critical episodes, accompanied by a sense of threat and insecurity, challenging the way in which people understand the world around them. Such situations, called crises, can be caused by natural forces (earthquakes, tsunamis, storm winds, torrential rain, snowstorms, avalanches, epidemics), intentional actions of'others', i.e. various enemies inside or outside the society (international conflicts and war, terrorist attacks), and human errors in managing technology, to name a few.