In March 2004, the Secretary of Homeland Security, at the request of the President, released the National Incident Management System (NIMS). The NIMS is a comprehensive system that improves response operations through the use of the Incident Command System (ICS) and the application of standardized procedures and preparedness measures. It promotes development of cross-jurisdictional, statewide, and interstate regional mechanisms for coordinating response and obtaining assistance during a large-scale or complex incident.

NIMS is much more than just a list of required elements; it is a new approach to the way we prepare for and manage incidents, one that will lead to a more effective utilization of resources and enhanced prevention, preparedness, and response capabilities. NIMS compliance should be considered and undertaken as a community-wide effort. The benefit of NIMS is most evident at the local level, when a community as a whole prepares for and provides an integrated response to an incident. Incident response organizations (to include local public health, public works, emergency management, fire, emergency medical services, law enforcement, hazardous materials, private sector entities, non-governmental organizations, medical organizations, utilities, and others) must work together to comply with NIMS components, policies, and procedures. Implementation of the NIMS in every local jurisdiction establishes a baseline capability that once established nationwide, can be used as a foundation upon which more advanced homeland security capabilities can be built.