RedactedNarrative: V1 OPERATOR WAS "TRYING OUT" V1 TO PURCHASE.  SHE ADVISED THE OCCUPANT/VICTIM WAS SHOWING HER HOW TO DRIVE.  SHE FURTHER STATED AS THEY WERE CRUISING THEY POSSIBLY HIT SOMETHING SUBMERGED IN THE WATER THAT EJECTED THEM BOTH. THE KILL SWITCH WAS NOT BEING UTILIZED.  AS V1 BEGAN CIRCLING THEM, SHE WAS ABLE TO MAKE IT TO THE BANK AND SAW V1 STRIKE THE VICTIM.  V1 EVENTUALLY HIT THE BANK AND STOPPED. OPERATOR WAS ABLE TO ASSIST THE VICTIM TO THE BANK.  UPON INTERVIEWING THE VICTIM HE SAID ALL HE REMEMBERED WAS FEELING V1 HIT HIS HEAD AND SO HE PUT HIS ARM UP TO PUSH IT AWAY.  OPERATOR WAS CITED FOR NOT WEARING A KILL SWITCH