Other mistake: During the drill performance towards the end, the cadets' rifles bounce around like rubber, but you can hear the sounds of a hand hitting a real weapon from time to time.
Other mistake: As Major Payne is sitting at the train station, a CSX freight train goes by the station. He then looks down at the gift Tiger gave him and he then looks up at the end of a Amtrak passenger train on the same tracks.
Answer: The credits are in alphabetical order (according to last name). He did get top billing in the opening credits though. Damon is actually listed 25th in the end credits, after his nephew, so I don't know what you saw where he was listed 7th or 8th.
Bishop73
I have the movie, and his name is right after his nephew's, so I guess I got the place wrong.