Corrected entry: After Clemen's death, there is a shot of the ventilation shaft into which he was dragged by the alien. However, the shaft seen is the one in which Andrew's is taken into by the alien later. You can tell the difference because of the ceiling colour and the design of the ventilation shaft.
johnrosa
17th Apr 2004
Correction: Not so. The opening in the infirmary is octagonal every time it's seen, while the opening in the cafeteria is rectangular with rounded corners, much like a TV screen.
johnrosa