NIMS structures enable incident managers to manage incidents in a unified, consistent manner.
When an incident occurs or threatens, local emergency personnel manage response using ICS.
If the incident is large or complex, off-site EOCs activate to support on-scene operations.
The incident personnel in the field and in EOCs receive policy guidance from MAC Groups.
A Joint Information Center manages the Joint Information System (JIS) to ensure coordinated and accurate public messaging among all levels: ICS, EOC and MAC Group.
The first NIMS structure we will examine is ICS.