He finds the ship with the doors open after one of the crew on latrine duty goes for a walk outside as he's missing his plants. I know the guy gets arrested by some secret part of the military and saves a general. I seem to remember that the ship AI was locked down by the aliens who didn't actually build the ship but stole it. The AI talks to another ship AI and they blast the aliens on the other ship out the airlock maybe they just kill them. Any help gratefully taken guys/gals/whatevers!! Thanks in advance!!