Chestnut Health Systems is partnering with McLean County community organizations to host a training session exploring the connection between children exposed to drug use in their homes and familial child sex trafficking. The session, titled Hidden Risks: Drug endangered children and family human trafficking training, is co-sponsored by Allies Against Trafficking and the Logan/Mason County and McLean County Recovery Oriented Systems of Care, also known as ROSC. It will take place Jan. 27 at Illinois State University's Alumni Center in Normal.