David Halls, the first assistant director for "Rust," gave emotional testimony Thursday about the death of cinematographer Halyna Hutchins during the involuntary manslaughter trial of armorer Hannah Gutierrez. Actor Alec Baldwin was practicing a cross-draw in a church on the set of the Western movie in Santa Fe, New Mexico, in 2021 when the gun fired a live round, striking Hutchins and director Joel Souza, who suffered a non-life-threatening injury. Halls, the film's safety coordinator, had conducted the safety check on the Colt .45 revolver before it was handed to Baldwin.