The real solution to this is to add a “firehouse” building spawn, similar to a public works or suchlike.
It might have a firetruck, or not, metal or reinforced glass doors as one wall of a garage. Plus an office with some benches, lockers, computer terminals (broken or not, but I’m not sure what the working ones would do). Maybe an awesome fire axe! Bright or dark red "F"s and "f"s.
I’ll write it down for later if noone makes it now !