I did a late production rewrite to address notes from Denzel Washington on this film.  I was even called to the set to make adjustments on a scene as it was shooting.  I discovered later that the original writer had continued to work on a parallel version of the screenplay while I was doing mine, a serious violation of protocol for the WGA.  In the end, I decided not to arbitrate for credit.  Working with Denzel was incredible, the rest is best forgotten.