The National Incident Management System (NIMS) provides a systematic, proactive approach to guide departments and agencies at all levels of government, nongovernmental organizations, and the private sector to work seamlessly to prevent, protect against, respond to, recover from, and mitigate the effects of incidents, regardless of cause, size, location, or complexity, in order to reduce the loss of life and property and harm to the environment. NIMS works hand in hand with the National Response Framework (NRF). NIMS provides the template for the management of incidents, while the NRF provides the structure and mechanisms for national-level policy for incident management. On February 28, 2003, the President issued Homeland Security Presidential Directive 5 (HSPD-5), "Management of Domestic Incidents," which directed the Secretary of Homeland Security to develop and administer a National Incident Management System (NIMS). This system provides a consistent nationwide template to enable Federal, State, tribal, and local governments, nongovernmental organizations (NGOs), and the private sector to work together to prevent, protect against, respond to, recover from, and mitigate the effects of incidents, regardless of cause, size, location, or complexity. This consistency provides the foundation for utilization of NIMS for all incidents, ranging from daily occurrences to incidents requiring a coordinated Federal response. NIMS represents a core set of doctrines, concepts, principles, terminology, and organizational processes that enables effective, efficient, and collaborative incident management. HSPD-5 requires all Federal departments and agencies to adopt NIMS and to use it in their individual incident management programs and activities, as well as in support of all actions taken to assist State, tribal, and local governments. The directive requires Federal departments and agencies to make adoption of NIMS by State, tribal, and local organizations a condition for Federal preparedness assistance (through grants, contracts, and other activities). NIMS recognizes the role that NGOs and the private sector have in preparedness and activities to prevent, protect against, respond to, recover from, and mitigate the effects of incidents. Building on the foundation provided by existing emergency management and incident response systems used by jurisdictions, organizations, and functional disciplines at all levels, NIMS integrates best practices into a comprehensive framework for use nationwide by emergency management/response personnel in an all-hazards context. These best practices lay the groundwork for the components of NIMS and provide the mechanisms for the further development and refinement of supporting national standards, guidelines, protocols, systems, and technologies. NIMS fosters the development of specialized technologies that facilitate emergency management and incident response activities, and allows for the adoption of new approaches that will enable continuous refinement of the system over time. The Secretary of Homeland Security, through the National Integration Center (NIC), Incident Management Systems Integration Division (formerly known as the NIMS Integration Center), publishes the standards, guidelines, and compliance protocols for determining whether a Federal, State, tribal, or local government has implemented NIMS.Additionally, the Secretary, through the NIC, manages publication and collaboratively, with other departments and agencies, develops standards, guidelines, compliance procedures, and protocols for all aspects of NIMS. This document was developed through a collaborative intergovernmental partnership with significant input from the incident management functional disciplines, NGOs, and the private sector.

Spécifications