I worked at Heathrow for 12 odd years, and during that time, I had to attend hundreds of full emergencies and aircraft ground incidents. One think that we always found humerous was at the moment the incident was downgraded to local standby or cancelled alltogether, the LA fire service would come roaringing into the RV point. I suppose there were 2 reasons for that, either they were busy elsewhere, or they got the call late....in anyevent they weren't there before an incident blew up into anything serious. I doubt the mil would be any better or worse, or any less use if needed.