 During an emergency that would require a response from multiple agencies, dispatchers are quickly able to identify what county a particular piece of apparatus came from.FCFRD consists of 42 fire stations spread out across the county's , serving a population of 1.15 million residents.With over 1,400 uniformed staff, 300 civilian employees, and 350 operational and administrative volunteers, the Fairfax County Fire and Rescue Department is the largest fire department in the Commonwealth of Virginia.