 CONT: The spaceships different floors are never in order. For  instance, Keinholz is on the top floor, he goes down one floor,  looks around, then goes down another floor. This floor is the one  with Carruthers and Eric playing Chess. After Carruthers hears a  scream he goes up the ladder to ask Keinholz if he heard the noise;  Carruthers peaks out of the hatch and is on the top floor, skipping  the second floor Keinholz had to go through.