RedactedNarrative: ON JULY 27TH, 2022, AT APPROXIMATELY 7:00 PM, WCO WAS NOTIFIED OF A BOAT ACCIDENT THAT HAD OCCURRED OUTSIDE OF MARINA ON LAKE SHARPE NEAR PIERRE.  O1 AND O2 WERE ALONE ON THE JET SKI'S AND WERE WEARING PFD'S WHEN THE ACCIDENT OCCURRED.  O1 STATED THEY WERE JUMPING EACH OTHER'S WAKE WHEN O2/V2 VEERED TO THE PORT SIDE AND SUDDENLY FELL OFF THE JET SKI.  O1/V1 WAS NOT ABLE TO AVOID O2/V2 AND RAMPED THE BACK OF O2/V2'S JET SKI, V1 ALSO MADE CONTACT WITH THE HEAD OF O2.  O2 WAS TRANSPORTED TO THE HOSPITAL IN PIERRE FOR THE HEAD TRAUMA.