This document discusses various types of disasters including fire, explosions, floods, and earthquakes. It provides guidance on first aid for each type of disaster such as remaining calm during a fire, controlling bleeding for explosion victims, evacuating to higher ground during floods, and dropping and covering during earthquakes. The document also discusses the roles of nurses in immediate disaster response like assessing airways and providing first aid, and later roles like monitoring patients and preventing disease outbreaks. Rehabilitation for disaster victims is also summarized, including primary treatment, physiotherapy, occupational therapy, and assistance with readjustment.