As I've explained in the past, my goal for these is to walk a line where I'm respecting the uniform and having some sense of decorum, but reflecting the subjects' personalities more than typical "I'm a tough guy" military portraits. Promoting a relaxed environment for a subject in a dress uniform can be a challenge, and I work very hard at modulating the conversation and environment to oscillate between "too loose" and "too formal."
All shots on my Hasselblad, using either FP4+ or Portra 160.