Detective Jeffrey Nelson is an experienced law enforcement officer with the Barron County Sheriff’s Department in northwest Wisconsin. Detective Nelson has over 24 years of law enforcement experience and has served as a major crimes Detective for the last 17 years. He has been involved in multiple death and homicide investigations in his career and has also worked on drug task forces and general investigations. Detective Nelson also has attended the National Fire Academy and has investigated multiple arson fires as an arson investigator. Detective Nelson currently serves as the Tactical Team Commander for the Barron/Rusk County regional Emergency Response Team (ERT) and has been a member of the tactical team for over 21 years.

Special Agent Joe Welsch has over 31 years law enforcement experience. For 16 years, S/A Welsch was employed by the Sauk County Sheriff’s Office, Wisconsin where he worked in the patrol and detective divisions. For the last 4 years working at the Sauk County Sheriff’s Office, S/A Welsch was promoted to supervisor of criminal investigations. S/A Welsch has been employed as a Special Agent with the Wisconsin Department of Justice- Division of Criminal Investigation (DCI) for the past 15 years. S/A Welsch is currently assigned to the Major Crimes Bureau, where his primary responsibility involves investigating homicides, missing persons and officer-involved deaths. He has been assigned as lead investigator in several high-profile homicides and death investigations.

Special Agent Jon Hauser entered into service with the Federal Bureau of Investigation in 2006. He is assigned to the FBI Milwaukee Division, Superior Resident Agency. He is responsible for conducting criminal and counter-terrorism investigations in Wisconsin. Special Agent Hauser is also a certified Special Agent Bomb Technician for the FBI. Prior to the FBI, he spent 13 years in the Air Force as an active duty aviator.