 Nearly three years ago, actor Alec Baldwin was pointing a prop gun on the movie's set of Rust. It went off, killing cinematographer Helena Hutchins and wounding the film's director. In her opening argument, special prosecutor Erlinda Johnson said Baldwin didn't do a safety check of the Colt .45. The evidence will show that someone who played make-believe with a real gun and violated the cardinal rules of firearm safety is the defendant.