... at my duty station for 3 years by my PRD time. I know you have to go from an over manned to under manned rate but was wondering what my chances are if anyone knew the manning of each of those rates. I'm a dental tech hospital corpsman. Wanted to be an FMF corpsman with marines but now I'm stuck in the black hole of the Dental NEC and have come to terms that I'll never do what I wanted in the proud corpsman community. Joined to see the world and serve my country, not be mocked as a tooth fairy and fix teeth, sitting on my ass for 5 years