The armorer and assistant director who handed off a fatal prop gun to Alec Baldwin have been identified, after it was revealed that some crew members walked off the set of the movie Rust over safety concerns before the tragic shooting that killed cinematographer Halyna Hutchins. A search warrant released Friday said that armorer Hanna Gutierrez laid out three prop guns on a cart outside the filming location, and assistant director Dave Halls grabbed the gun from the cart and brought it inside to Baldwin, unaware that it was loaded with live rounds.