going to have. also thorpbgs assistant director of rust said he didn t check all the rounds loaded into the gun before handing it to alec baldwin. er hearing from investigators that it was a bullet fired from the gun. as to whether anyone might be held criminally responsible, here s what the district attorney told josh campbell. . it s a terrible tragedy. we don t know how the live rounds got there. that will end up being the linchpin for whether a decision is made about charges. joining us is criminalologist joey jackson and new york city homicide prosecutor paul callen. how the live rounds in the chamber will be the linchpin to this investigation. why and for whom? for which people involved here? i m talking about criminal