RedactedNarrative: UNIT 1 WAS IN STEVENS CREEK FISHING.  OPERATOR OF UNIT 1 WAS TRYING TO START THE MOTOR WHEN WITNESSES HEARD A SPLASH.  WITNESSES TURNED TO SEE A MAN TRYING TO SWIM TO SHORE.  WITNESSES SAW THE MAN DISAPPEAR BELOW THE SURFACE AND NEVER SAW HIM RESURFACE.  VICTIM WAS RECOVERED THE FOLLOWING DAY.