 It's here and now. Jury selection begins today as actor Alec Baldwin goes on trial for the fatal shooting three years ago on the set of the Western he was filming called Rust. Baldwin has pleaded not guilty to involuntary manslaughter. He maintains that a prop gun on the set went off accidentally when he pointed it at the film's cinematographer. Meg James is a senior entertainment writer for Los Angeles Times. She's covering the trial. Meg, could you remind us how this all happened?