 The actor was setting up a scene for the movie when the Colt .45 he was pointing went off, killing cinematographer Helena Hutchins. During the trial, the gun's manufacturer testified the firearm could only be set off by pulling the trigger. Attorneys asked witnesses who brought live ammunition to the set. A Santa Fe detective says it was the film's armorer, Hannah Gutierrez-Reed, who's already been convicted for involuntary manslaughter. She's serving an 18-month sentence.