RedactedNarrative: VESSEL #1 WAS OPERATING THE PWC NORTH OF HOUSEBOAT ISLAND ON LAKE KEYSTONE.  VICTIM #1 WAS SWIMMING CLOSE TO THE SHORE.   VESSEL #1 OPERATOR STATED THAT THE PWC STARTED MAKING A BEEPING NOISE AND HE START HEADING BACK TO SHORE.  THE OPERATOR ADVISED WHEN HE GOT CLOSE TO THE SHORE HE TURNED THE MOTOR OFF.  HE STATED THAT HE WAS TELLING SWIMMERS  TO GET OUT OF THE WAY AND STRUCK VICTIM #1.  A.O.I. WAS 100 FEET NORTH OF THE SHORELINE OF HOUSEBOAT ISLAND AND 1.3 MILES EAST OF AKDAR PARK BOAT RAMP.  VICTIM #1 WAS WADING IN 4 FEET OF WATER.  (ALL MEASUREMENTS ARE APPROXIMATE).