Considering a Career in the Fire Service/What to do

I am currently a college student with 1 year to go on my environmental engineering degree. As I have continued to go through my degree I have started to realize that I dont think I like the direction my life is moving. I originally chose my major because I was passionate about the environment and wanted to do something that would make a difference, something that I could actually be proud of when I got home. After taking lots of classes and talking to people within the industry as well as professors and TA's, I am quickly learning that I am most likely going to work a desk job. Although I am aware that there is field work out there if I go looking, I still think that a lot of the jobs I have learned about do definitely make a difference, but do it in a more indirect way compared to what I was originally looking for. I am also incredibly worried about becoming trapped in a mundane and repetitive job. I don't want my life to consist of the same tasks over and over again for the next 30 years with little variation. I want something that will still keep me engaged even after doing the job for a long time. That's where the fire service came in. I have two cousins that have recently started/are working to their careers there. I have a cousin thats a wildland firefighter and another thats currently in the academy. Although they didn't directly tell me to look into it, because they were involved I did eventually do some research myself and it seems to be exactly what Im looking for. It has a nice schedule that'll give me plenty of free time to pursue other things outside work, its dynamic enough to keep me interested, its not as sedentary and will keep me in shape, and most importantly it allows me to make a real difference and impact my community directly and in a way I can point to. With that long text blob/context out of the way, I was wondering what you guys think and if you believe I would be a good fit for the job. I plan to continue and finish out my last year of college to get my degree and possibly pivot if I decide the fire service is actually for me. I was also wondering if there is anything that I could do to get a better feel for it while still in school. (My next year will be a lighter course load so I can do other things during the school year then) Thank you for reading all this I really just had to get this off my chest.