Hmm. too bad you've already got the script. I may have a suggestion or two if this guy is in the military. There are alot of little quarks about the military that you don't seem to see much in books, movies, or tv shows. Like for instance, crossing the line. In the navy when you cross the line (eqaudor) you turn from a feeble polly-wog (wog) to a mighty shell-back by the mighty high consule of Lord Neptune (your captain) in a test of loyalty, will power, and stamina. Such test include fasion shows, trash crawls, plank walking, and for them fruiter bubble heads (sub guy) straight up restriction of the right to wear any clothes.
Don't know if you could use any of that stuff, but i think it may fit well to flesh out the game. Service members would get alot of it, while civies would be baffled at some of it. But so long as it's funny, why not for at least background for the setting?