Ex-deputy to plead guilty to being on fentanyl during deadly pursuit Kelly Backman admits he was on drugs during a chase through Fergus Falls last October. Author: Minnesota Judicial Branch A former Otter Tail County deputy who was on fentanyl during a fatal pursuit in Fergus Falls last October will plead guilty to one of the charges against him. Kelly Backman, 43, plans to plead guilty to public officer misconduct, a gross misdemeanor, with a charge of fourth-degree DWI expected to be dismissed, according to a petition to enter a plea of guilty that he and his attorney signed on May 23.