David Letterman wasted no time last night asking Zero Dark Thirty actress Jessica Chastain about the controversy surrounding the film during her appearance on The Late Show. “I’m getting ready to be called in front of a Senate committee after the show,” Chastain joked in reference to Senator Diane Feinstein’s investigation of the making of Zero Dark Thirty and what the CIA shared with filmmakers Kathryn Bigelow and Mark Boal about how Osama bin Laden was found. “I think it is important to know that the film is not a documentary,” Chastain also noted. Watch a portion of the interview below: