For extraordinarily large, complex incidents occurring in the city or county involving numerous agencies and/or jurisdictions, multiagency coordination will be necessary to coordinate and support incident management activities. A combination of government and/or allied agency facilities, equipment, personnel, and communications will be integrated to coordinate interagency and intergovernmental issues regarding incident management policies, priorities, and strategies. This multiagency coordination will be conducted from the EOC and may include coordination with one or more outside EOCs, Department Operations Centers (DOCs), and/ or private business or non-governmental organization operations centers.

The EOC will include representative(s) from each involved agency/jurisdiction. Principal functions and responsibilities for multiagency coordination of the EOC  include ensuring that each agency involved is providing appropriate situational awareness and resource status information, establishing priorities between multiple incidents and/or Area Commands in concert with the unified command, acquiring and allocating resources in concert with the unified command, anticipating and identifying future resource requirementsand providing strategic coordination as required. The MAC Group supports multiagency coordination by coordinating and resolving policy issues arising from the incident(s), and making decisions on scarce resource allocation.