Complex sentence: Cam Cannon and Richard Rionda Del Castro wrote the script for the film, while Rionda Del Castro was attached as producer also, and the focus in the film would be on the bravery of the crewmen aboard the U.S.S. Indianapolis.
Split into simpler sentences: Cam Cannon and Richard Rionda Del Castro wrote the script for the film, while Rionda Del Castro is attached as producer also. The focus of the film is on the bravery of the crewmen aboard the U.S.S. Indianapolis.