Types of Disaster
Though, all kinds of disaster require more or less similar skill-sets and rescue-efforts at least a few days after the event, it is important to understand various kinds of disasters. Depending upon the actual nature of disaster, the immediate reaction needs to be different.
Also, the first few moments of disasters are distinctly different for each kind of disasters. Thus, understanding of each kind of disaster might also help in identifying the onset of a disastrous event, so that a trained person can undertake some key actions, during the initial few moments. This could have a major impact on the final outcome in terms of amount of final loss.