 Nearly three years after Alec Baldwin fatally shot his cinematographer on a New Mexico movie set, the actor attended his pretrial court hearing in Santa Fe today. The judge is weighing the trial parameters for evidence, testimony, and arguments. Baldwin claims his prop gun accidentally went off, killing cinematographer Helena Hutchins and injuring director Joel Sousa. He has been charged with involuntary manslaughter. If convicted, Baldwin could get up to 18 months in prison.