l tried a similiar adventure based on the movie "Die Hard". The PC's were visiting family on a brand new Star Base the big mushroom kind. Since it was still under constuction and had a skeleton crew onboard it was easy for the "Terrorist" to take over. The adventure was played out with "Die Hard" as my road map although I did make some changes, to through the players off. I also used "Under Siege" as a model. That one was great except everyone died when they decided to self destruct the ship. Oh well you win some, you nuke some.
"Target all your firepower on the nearest Federation starship!" Yoda, Episode II