Last week, actor and producer Alec Baldwin fired a prop gun that killed cinematographer Halyna Hutchins on the set of his new film "Rust." The film's director, Joel Souza, was also hit and injured by a bullet and was hospitalized before being released.The International Alliance of Theatrical Stage Employees sent an email to its members alleging that the gun used in the scene contained a live round.IATSE has been arguing that America's film sets are unsafe since before the shooting, even threatening to go on strike over the issue. A strike is off the table for now, but many members still feel unsatisfied.What's the state of America's film sets?Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find us on Twitter @1A.