 The National Multi-Agency Coordination Group (NMAC or MAC) also resides at the NIFC; it is used to allocate and prioritize personnel and equipment if several simultaneous national emergencies are straining the support system.MAC also establishes the National Preparedness Levels throughout the calendar year in order to help assure that firefighting resources are ready and able to respond to probable new incidents (a form of risk management).Preparedness Levels are dictated by burning conditions, fire activity, and (especially) resource availability.