Why Jack Osbourne Thinks Another Family Reality Show Will Never Happen (Exclusive)

Jack Osbourne chats with ET's Deidre Behar at the 'Special Forces: World's Toughest Test' premiere in Los Angeles. The 'Fright Club' star explains why a revival of his family’s reality series will never happen. Plus, Kelly Rizzo, who was married to Bob Saget when he died, says she cried the most on the show. She also reveals what Bob would think of her tackling this competition. 'Special Forces: World's Toughest Test' season 2 premieres on Sept. 25 on Fox.