(MCLEANSBORO, IL) — A Dahlgren man will spend the next 15 years in state prison after pleading guilty recently to predatory criminal sexual assault of a child.  According to Hamilton County State’s Attorney Justin Hood, 18-year-old Brett H. Ewald will have to serve a term of mandatory supervised release once he is released from custody for a term of three years to life to be determined by the Department of Corrections. Hood says Ewald admitted to committing an act of penetration with his mouth on a girl under the age of 13 between July 4 and Nov. 24 of last year. The case was investigated by Illinois State Police.