Disaster management involves all level of government.
Non governmental and community based organizations play a vital role in the process.
Modern disaster management goes beyond post disaster assistance.
In now includes pre disaster planning and preparedness activities, organizational planning, training, information management, public relations and many other fields.
Crisis management is important but is only a part of the responsibility of a disaster manager.
The newer paradigm is the Total Risk Management (TRM) which takes a holistic approach to risk reduction.