Firefighters make good money, and get there real quick. Like 100k + in 5 years. They also have more vacation than anyone you've ever met. Almost everyone runs a side business of some sort in all their spare time.
Fire fighting in that past I think was a shit job, but now when it comes to fighting fires, they take so many precautions that aside from a building collapsing its pretty safe long term. Full SCBA units, only X amount of hours at a fire, etc.
They do have to go to alot of gruesome first responder incidents though... car crashes, jumpers, etc.
Guy I know goes on 5-6 week long hunts a year, and runs a reno business in the summer. Plus I think at one point (could be city specific) they get a year sabbatical as well.