The issue of safety on the sets of Hollywood films was launched into the national conversation this week after Alec Baldwin pulled the trigger on a prop gun that killed cinematographer Halyna Hutchins while filming an indie Western, Rust, at a New Mexico movie ranch.

The films director, Joel Souza, was also hit during the incident but is recovering in a Santa Fe hospital. He said he was gutted by the loss of Hutchins in a statement issued to Deadline on Saturday.

She was kind, vibrant, incredibly talented, fought for every inch, and always pushed me to be better, the director said.

Baldwin also expressed shock, saying Friday that his heart is broken for Hutchins loved ones. He was photographed Saturday leaving a Santa Fe hotel with her husband, Matt Hutchins, and their young son, whom the actor hugged before parting ways.

Heres what we know about what happened, how it happened, and what is being done to prevent future tragedies like it.