Revealing mistake: Near the end of the film where Proctor kicks the chair towards Harris, if you look closely you can see the two grooves/rails that the chair slides along.
Sgt. Moses Hightower: Sir, I realize this is your jurisdiction. But if there is a rescue attempt, we would like to volunteer.
Capt. Thaddeus Harris: Commissioner Murdock, I couldn't agree more. I think it is vital that the rescues know Commandant Lassard intimately. Now, I can vouch for the abilities of these officers. After all, I trained them myself.
Sgt. Larvell Jones: Must be the drugs.
Trivia: On the aeroplane, there is a man who refuses to put out the cigar he is smoking. This man is the film's director, Alan Myerson.