VIDEO: Drones are becoming a vital tool for first responders across Eastern Iowa. Authorities used one to find six people stranded along the Yellow River near Effigy Mounds last night. That’s in Allamakee County. The Allamakee County Sheriff's office called the Decorah Fire Department for help from their drone. It helped them spot the six who got lost while tubing. Decorah Firefighter Zack Kerndt was sitting at home Sunday night when he and his drone skills answered a call for help.