Freedom and her First First

Anne McCaffrey has a set of books about a ship called Freedom. There's a game calle FREEDOM's First Resitance.
I have the book Freedom's Challenge. I haven't read it yet though. I did read about the Catteni in Get Off The Unicorn. It wasn't ver wholesome, though. hihihi.
Anyways, the Catteni are the bad guys. They are some sort of heavyworlder super power who plays for keeps.