Firefighters from Utica, Oglesby and Tonica watch OSF Lifeflight helicopter depart the Deer Park Model Airplane Field on Friday, May 29, 2026 at Matthiessen State Park. Two helicopters were called for two patients who were drownding in the Cascade Falls area of the park. Fire and EMS crews from Utica, Tonica and Oglesby, along with Conservation Police personnel, responded to the incident shortly after 12:45 p.m. (Scott Anderson)