Neither does firefighting. The point is if we don't need as many firefighters to fight the fewer fires we have, there are more cost-effective ways of maintaining a group of first responders for medical emergencies.
Please, let's hear your ideas. (blows away in the wind)
Let me think for a few seconds about ideas. Fitter EMTs who can assist people in more demanding physical situations. A subset of firefighters who can provide medical assistance but don't need the complete fire training curriculum and so can be paid less. Maintaining the ratio of firefighters and stations which was previously found satisfactory but adjusting it for requiring fewer of them since we have fewer fires.
Your turn.