RedactedNarrative: THIS CRASH OCCURRED AS VESSEL 1 WAS ON THE MISSISSIPPI RIVER. TWO UNKNOWN BOATS BEGAN TO OVERTAKE VESSEL 1 FROM EACH SIDE. AFTER THE UNKNOWN VESSELS PASSED VESSEL1, BOTH OF THEIR WAKES COLLIDED WITH THE BOW OF VESSEL 1. OPERATOR 1 AND PASSENGER 2 WERE SITTING ON TOP OF THEIR SEAT BACK, WHILE UNDERWAY. AT SOME TIME DURING THE COLLISION WITH THE WAKES, PASSENGER 2 WAS MOVED FROM SITTING POSITION, CAUSING BACK INJURY. NO VESSEL DAMAGE.