State/tribal emergency operations centers (A) are activated to support local EOCs in conducting response activities.
Emergency operations centers (EOCs) are the facilities in charge of emergency/disaster preparedness and management at the strategic level. They centralize information, resources, and the orders given in case of an emergency.
There are different levels of EOCs according to the jurisdiction: national, state, tribal, city, or county. These levels can be activated in support of one another if the lowest-level ones do not have the necessary resources to conduct the response activities on their own.