Vessel #1, operated by the mother, was pulling a tube with father and son in tube.  The tube occupants fell off and mother in Vessel #1 was coming back to pick them up.  A large wave pushed the boat into the subjects in the water.  Father pushed son out of the way, but was struck by the moving propeller of the boat.  Father had left arm severed mid forarm by the propeller.  Son had lacerations and a puncture wound from the boat's motor.
Jerome Township               