South Utah man that's some beautiful land
St. George is paid
Anyway retired here. Big city WV small for anywhere else. No EMS, yeah brothers you heard that right!

Did first response though.
My take :
Age how old are you? Many places have a cut off say 36 to 40s
EMS - I am a paramedic still, if you can find a dept. that doesn't run EMS jump on it. EMS turns the fire dept into dog years. I work just enough casual for my county EMS to remember why I hated it. Plus I can wash my truck for free.
Can you move? You may have to to get a job. Pay is subjective to the area.
Shifts usually a 24 hour shift starting a 7 to 8AM and it is a true family of dysfunctionals. You will laugh till you piss yourself, cry, want to murder your work mates, etc.
Can your home life sustain you being gone around 10 days a month.
Can you cook? Learn how now.
Look up to the senior man or woman. They run the station and your respective rig.
Ask questions but limit your questioning, you are new.
Easy to get offended? Man the FD is built on ball busting, dudes will cut you to pieces and if they find your weakness, they will eat you alive. These same men will be there at 3AM in 10 foot of snow or a flood if you ever need anything!
Now Cancer. This real.
Its getting worse for firefighters, its not wood and paper that's burning anymore. Hell the protective gear (bunker, turnout gear) is now being found to contain cancer causing materials in it.
Vollies - oh boy that's a whole different world. It is an excellent way to to get a taste of things. I was a vollie for many years.
Firefighting jobs - Using Ohio as an example, as I am from Ohio. If you walk in as a Paramedic and have what is call a 240 card. You can get hired in most small depts. WV where 95% of the depts are volunteer does not operate the same. You get hired and then trained. Same thing for most big city depts. They will train you.
Best of luck in your decisions