
i read somewhere he was sent on the predator shoot to keep one of the actors in line and be there if he started acting crazy and that was the only reason he actually had a part in the movie'
edit: i remebered it wrong. here is what i found on wikipedia:
As a favor to the writer of Joel Silver's blockbuster Lethal Weapon, the studio hired screenplay writer Shane Black not only to play a supporting role in the film, but also to keep an eye on McTiernan due to the director's inexperience.
Based on their long history Lethal Weapon films, Predator and Kiss Kiss Bang Bang you can safely assume that Black and Silver are friends.





