Director Richard Donner demanded some big changes on the script which included changing the original character of Lorna (who had a different name in earlier drafts) into a woman and turning her into Riggs's girlfriend. He also re-worked the script to be less story-oriented and not focus on the main villains but instead on the relationship between Riggs and Murtaugh. He also toned down action scenes from the script and brought back Leo Getz into the story. All of his scenes were written in afterwards. In the original script Leo had left L.A. for New York. Boam had some disagreements with changes that Donner made but he was not against them. Boam was fired after he wrote his first two drafts of the script. One of the reasons for this was because Donner wasn't interested in the script and he disagreed with some parts of Boam's original draft. After another writer, Robert Mark Kamen, was hired to re-write the script, Boam was called to return to work on it again. The filmmakers realized that Kamen's re-writes were not working. Boam asked to work alone on the script and ended up constantly changing it from October 1991 until January 1992 while filming was taking place. These types of changes also occurred during the filming of "Lethal Weapon 2".