Black Hawk Down 2. IMDb. Trivia. Despite the fact that Ken Nolan is the only credited writer, there were others who contributed uncredited. Bubbles Movie Theatre. Sam Shepard wrote some pages of dialogue, but they were not used Eric Roth wrote crucial speeches for Josh Hartnett and Eric Bana to deliver in the closing minutes Steven Zaillian made a dialogue driven rewrite and Stephen Gaghan did one rewrite early on in the development. Nolan was the writer on the set for four months, and worked on the script for over two years. Prior to WGA arbitration, promotional materials for the film such as theatrical posters credited the screenplay to both Nolan and Zaillian. This was later changed to award sole credit to Nolan.