Wich career should I go with?

I currently work as a city employee as a waste water treatment facility operator trainee, It is a good job and doesn't make to bad of money but I just don't feel satisfied. I took ROTC in high school in anticipation of a law enforcment career because I have always wanted to be a game warden but just didn't have the time for college. I will do what ever it takes to accomplish my goals I just don't know if I should give up what I have now? Any ideas on how I could go about this career? My fianc� says men look good in uniform so she's on board.