I work for the US Forest service as a wildlife biologist. I also taught high school several years. I guess my question to you is, when you think of a "forest ranger" what do you think that job entails? What do you envision doing?

Because a forest ranger with the federal government is responsible for managing a district on a national forest. They manage staff, make decisions about projects, direct timber, wildlife, recreation, engineering, fire, etc. for their district. It is a very demanding job with a lot of competing interests, and at times a lot of politics. The job is actually quite different than many people envision.