Park Or Poptropia Whats A Good Degree To Get For A Job At A National Or State Park?

Whats a good degree to get for a job at a national or state park? - park or poptropia

I like to work as guards in the immediate is not, especially after my current job in the army. I would like to market myself better by a useful knowledge in this kind of work. All proposals for the high school or college courses?