I loved R. Lee Emery as the drill instructor in the first or second episode.
"In space no one can hear you scream, unless it is the battle cry of the United States Marines."
I kind of liked the show and would have liked to see where it was going in the next season. It suffered from the usual problem of TV shows in which people don't specialize enough because they want to keep the cast small. If they are pilots, why are they serving as infantry in some episodes?
They were Marines. First and foremost, all Marines are riflemen.