RedactedNarrative: FOUR-YEAR-OLD BOY FELL OVERBOARD.  FATHER (OPERATOR OF BOAT) JUMPED INTO WATER TO RESCUE CHILD.  GRANDFATHER THEN JUMPED IN TO RESCUE SON AND GRANDSON.  NINE-YEAR-OLD CHILD STILL ON BOAT CALLED 911.  PASSING BOATER WAS ABLE TO GET CHILD AND FATHER ONTO HIS BOAT.  NINE-YEAR-OLD CALLER CONTINUED DRIFTING AWAY ALONE IN THE VICTIM BOAT.  GRANDFATHER BECAME UNRESPONSIVE WHILE IN THE WATER.  FIRST RESPONDERS ARRIVED ON SCENE AND ALL PARTIES WERE TRANSPORTED TO SHORE.  CPR WAS CONDUCTED ON GRANDFATHER.  ALL PARTIES WERE TRANSPORTED TO MCLAREN HOSPITAL.