"Alec Baldwin cocked and fired a gun meant to be loaded with blanks on the set of his movie “Rust,” and “did not know the prop contained live rounds.” Cinematographer Halyna Hutchins was killed; the film’s director, Joel Souza, is in intensive care."
The armourer on the set of the movie is responsible for every weapon and ammo of any sort on the entire set.
A good one checks all weapons, ammo, loads and weapons several times during the shooting of a scene. They personally hand the gun off to the assigned actor, and personally load the gun with the prescribed blanks, and supervise each actor and each weapon.
Not only that but they should give a class to all movie personnel before filming starts about safety, handling, etc.
Any infractions can have serious consequences. But, when it's the lead actor who thinks their chit don't stink, it's pretty hard to get them expelled from the set of a movie.... That's why it's usually the famous guys that have the mishaps.
