en.wikipedia.org/wiki/Rust_shooting_incident

The scene involved Baldwin’s character removing a gun from its holster and pointing it toward the camera. The trio behind the monitor were two feet (0.6 m) from the muzzle of the firearm and none of them were wearing protective gear such as noise-canceling headphones or safety goggles.

The trio behind the monitor began repositioning the camera to remove a shadow, and Baldwin began explaining to the crew how he planned to draw the firearm. He said, “So, I guess I’m gonna take this out, pull it, and go, ‘Bang!’” When he removed it from the holster, the revolver discharged a single time.

Halls was quoted by his attorney Lisa Torraco as saying that Baldwin did not pull the trigger, and that Baldwin’s finger was never within the trigger guard during the incident.

This would be David Halls, the assistant director.