This depends on many variables that make superficially similar events quite different from each other, and they include such factors as magnitude, location and impact of the event; availability of human and material resources to address it; mandates, strengths and limitations of emergency response and management agencies; degree of resilience in individuals, agencies and social systems; and other factors that contribute to the uniqueness of each situation.
To je odvisno od številnih spremenljivk, zaradi katerih se na videz podobni dogodki zelo razlikujejo, in vključujejo dejavnike, kot so razsežnost, kraj in učinek dogodka, dostopnost človeških in materialnih virov za njegovo reševanje, pooblastila, prednosti in omejitve agencij za ukrepanje ob nujnih dogodkih in upravljanje takih dogodkov, stopnja odpornosti posameznikov, agencij in socialnih sistemov ter drugi dejavniki, ki prispevajo k edinstvenosti vsakega primera.