VESSEL 1 WAS A 10" YAMAHA PERS. WATERCRAFT WITH 1 PERSON ON BOARD.  VESSEL 2 WAS A 10" YAMAHA PERS. WATERCRAFT WITH 2 PEOPLE ON BOARD.  OPERATOR 1 STATED THAT HE WAS FOLLOWING OPERATOR 2 AND PASSENGER, OPERATOR 1 WAS APPROXIMATELY 50 FEET BEHIND THEM AND OFFSET APPROXIMATELY 40 DEGREES TO HIS LEFT, TRAVELING THE SAME DIRECTION.  OPERATOR 2 CUT HIS JET SKI 90 DEGREES TO HIS LEFT BRINGING IT DIRECTLY IN FRONT OF VESSEL 1 AND DROPPING SPEED.  OPERATOR 1 ATTEMPTED TO TURN LEFT AROUND THEM AND IMPACTED IN THE TURN AT APPROXIMATELY 25 MPH.  OPERATOR 1 WAS THROWN OFF THE VESSEL, UPON SURFACING OPERATOR 1 SWAM TO OPERATOR 2 AND PASSENGER.  BOTH OPERATOR 2 AND PASSENGER WERE COMPLAINING OF INJURIES AND REQUESTED MEDICAL ATTENTION.  OPERATOR 2 HAD BROKEN HIS ARM, PASSENGER HAD AN OBVIOUS DEFORMITY IN HER LOWER LEFT ARM AND WAS COMPLAINING OF NECK PAIN.  BOTH OPERATOR 2 AND PASSENGER WERE CARED FOR BY RANGERS AND THE MEDICAL DOCTOR AND BOTH WERE PLACED IN THE CARE OF PARAMEDICS ON THE AMR AMBULANCE, AND TRANSPORTED.  NO DAMAGE WAS REPORTED TO THE VESSELS.
BOULDER CITY                  