As Mack said there are various scenarios for protections of airports that vary from city to city. There doesn't seem to be any right or wrong solution. Since AFR is such a specialized type of firefighting was very different equipment, turnout gear and tactics, it seems like that type of firefighting is best left to specialized units instead of being integrated into a large department. However, the structural firefighting aspects of airport firefighting, as well as water supply and triage to support the actual AFR are basically the duplication of such efforts for other areas of firefighting. Maybe the best solution is to have the actual AFR firefighting a separate organization or division of a larger department and have everything else handled by the department who covers that area. Even if the actual AFR was a separate organization it should still remain under the control of the municipalities conventional firefighting command structure (Commissioner, Chiefs, etc.). This would allow reduced bureaucracy for the AFR resources as well as allowing better utilization of other resources.