Actor Dan Aykroyd is now one of Mississippi's newest deputies.Aykroyd, who has appeared in films including 'The Blues Brothers' and 'Ghostbusters,' was sworn in on Friday by Hinds County Sheriff Tyrone Lewis, Clarion Ledger reports.Before his days on the big screen, Aykroyd served two law enforcement agencies in Louisiana for nearly 16 years, the website reports.SCROLL DOWN FOR VIDEO Comedian, sin