The document discusses various support functions required by fire departments including dispatch, transmission of alarms, GIS/maps, hazardous materials control, arson investigation, cost recovery, personnel management, information systems, business management, fire business management, technical support, warehouse/central stores, repair garage, radio shop, and adjutant/aide. It explains that these support functions provide necessary equipment, training, facilities and expertise to aid emergency responders, as not all fire department personnel directly respond to emergencies. The support functions have various duties from receiving emergency calls and dispatching responders to managing budgets, equipment, and information systems.