How the Shooting on the Alec Baldwin Set Happened

The protocol, Mr. Halls told a detective, was for Ms. Gutierrez-Reed to show him the gun so he could check its barrel for obstructions, and for her to then open the revolver and spin it so he could see the contents of its chambers. Then he would call out “cold gun,” signaling to the crew that the gun did not contain live rounds.

When the cast and crew got back from lunch that day, Ms. Gutierrez-Reed showed Mr. Halls the .45 Colt revolver that Mr. Baldwin would handle. Mr. Halls told a detective that he recalled seeing three rounds inside but could not recall whether Ms. Gutierrez-Reed had spun the drum so he could check every chamber and every round.

“He advised he should have checked all of them, but didn’t,” Detective Alexandria Hancock wrote.

Both Ms. Gutierrez-Reed and Mr. Halls have been the subjects of complaints on previous productions.

In 2019 Mr. Halls was fired from a movie, “Freedom’s Path,” after a gun discharged unexpectedly on set, causing a minor injury to a crew member, its production company said. Neither Mr. Halls nor his lawyers responded to requests for comment.

Ms. Gutierrez-Reed, who had been learning how to be an armorer from her father, Thell Reed, a Hollywood weapons expert, was just getting started as a head armorer herself. In a recent podcast, she noted that she had just finished filming her first movie as head armorer, a western called “The Old Way” starring Nicolas Cage, and confided that “I almost didn’t take the job because I wasn’t sure if I was ready.”

Stu Brumbaugh, a key grip on “The Old Way,” said in an interview that he had recommended Ms. Gutierrez-Reed be fired after he witnessed two unannounced discharges of weapons she was holding, startling others and in one case prompting an angry reaction from Mr. Cage. She was kept on, he said, which he saw as evidence of a broader problem in which producers try to cut costs by hiring less experienced crews. The incident was reported earlier by CNN.