My husband is considering becoming a park ranger after graduating from college. If he works at one park, then travels to different parks (working at different national parks over the years), does that mess up retirement benefits? His thinking is that since they are federal parks, it will be like being a federal employee no matter where you go. How does that affect 401K benefits? Is it easy to move around? Also, does it mess up health benefits if you move from park to park over the years until retirement? Basically, no matter where my husband works for a national park, does the time still add up as if he worked for one park?