What went wrong on the set of ‘Rust?’

Bryan Carpenter has worked as an armorer — the person responsible for overseeing weapons — on series such as “Queen of the South” and “Cloak & Dagger.” He has a lot of thoughts about what appears to have gone wrong on the set of the Alec Baldwin movie “Rust.”

“The number one is the live round being on set,” Carpenter says. “That never should occur. That would be the worst case scenario — to introduce a live round onto a movie set that’s using firearms. Aside from that, there’s a litany of mistakes.”

Carpenter details the circumstances that contributed to the tragic death of cinematographer Halyna Hutchins, and shares his hope that this nightmare will push the industry to embrace certification and more standardized training programs for cast and crew members who handle guns on set.

He also explains how what happened on “Rust” is different from the series of mistakes that led to the 1993 death of Brandon Lee on the set of “The Crow.”