This website provides information on the National Incident Management System (NIMS). "Developed by the Secretary of Homeland Security at the request of the President, the National Incident Management System (NIMS) integrates effective practices in emergency response into a comprehensive national framework for incident management. The NIMS will enable responders at all levels to work together more effectively and efficiently to manage domestic incidents no matter what the cause, size or complexity, including catastrophic acts of terrorism and disasters. Federal agencies also are required to use the NIMS framework in domestic incident management and in support of state and local incident response and recovery activities." The site provides links to frequently asked questions, the NIMS Implementation Letter to the Governors, a NIMS Fact Sheet, and other documents concerning the system.
Federal Emergency Management Agency (FEMA): http://www.fema.gov