For the fourth time in the last two years, the troubled Lincoln Hill School for Boys has a new leader.  The Wisconsin Department of Corrections is moving deputy warden Jason Benzel from Prairie du Chien to the teen prison, which has been under a criminal investigation for the last three years.  Governor Scott Walker has said he plans to close the prison and convert it to an adult prison if he is re-elected.  Benzel starts his new position January 22nd.  Lincoln Hills was raided by investigators in December 2015 and federal prosecutors have notified two former guards they could face charges.