At 17 in my junior year my grandfather(with whom I live)is urging me to get ready for life and s***. Only thing is what I'm interested in are the two fields he worked and he doesn't want me in (Military and then police force). However he tells me that I should do want and make my own decision. However the disappointment in his voice is soooooooo f****** evident. The service calls to me and I want to help people with my life in a way that's useful.Not much I can do.