Clearly this was a total fail in safety procedures across several lines. Dave Halls, Ms. Gutierrez Reed, and Baldwin were all negligent in this tragedy.
From the WSJ:
”Every time we hand off a gun on set to talent, we show the chamber, bore, and magazine,” said Chandler Cornblum, Vice President of Movie Armaments Group, a Toronto-based weapons supplier. “And the actor has to signal they accept the gun is empty, only then do I hand the gun off.”
Obviously this didn’t happen. All three aforementioned people on the set, in one way or another, contributed through negligence at the very least, to Halyna Hutchins death.