Investigators may have found the source of the live bullet fired by actor Alec Baldwin on the "Rust" set in New Mexico last month that killed cinematographer Halyna Hutchins, according to a new search warrant.Longtime Hollywood armorer Thell Reed, the father of the film's armorer, Hannah Gutierrez-Reed, said in a statement to investigators that ammunition once in his possession "may match the ammunition found on the set of Rust," according to a search warrant issued Tuesday by the Santa Fe County Sheriff's Office as part of the ongoing investigation....