text:  He was charged after a prop gun on a movie set went off, killing cinematographer Helena Hutchins, CBS News legal analyst Thayne Rosenbaum. One element of the prosecution's case against Alec Baldwin was that he was not only the lead actor but also a producer, so his duty of care was higher than someone who merely recites his lines. The prosecution has maintained that it wasn't an orderly set, that many things were happening during the filming that suggested gross negligence.