FEMA recently released its revised National Incident Management System, the U.S. national standard for incident management. NIMS establishes standardized incident management processes, protocols, and procedures that all federal, state, tribal and local responders will use to coordinate and conduct response actions.
The revised NIMS expands on the original version released in March 2004 by clarifying existing NIMS concepts, better incorporating preparedness and planning and improving the overall readability of the document. The revised document also differentiates between the purposes of NIMS and the National Response Framework (NRF) by identifying how NIMS provides the action template for the management of incidents, while the NRF provides the policy structure and mechanisms for national-level policy for incident management.
For an introduction to NIMS, the video on DVD NIMS: Introduction to the National Incident Management System DVD is an excellent resource.