Agarn's white hat
Has there ever been an explanation as to why Agarn has a white (or maybe tan) hat while everyone has a blue hat?
EDIT: By a weird coincidence, this morning the movie "She Wore a Yellow Ribbon" with John Wayne was on. Some men (officers) wore white/tan hats while the enlisted men wore blue. Still... O'Rourke and Agarn were both non-coms, but only Agarn wore white.
Maybe the true answer is "Dude, it's Hollywood. Don't worry about it."