RedactedNarrative: Deputy, I, was dispatched to a boat accident with injuries.  On arrival I observed the operator of the jetski (unit 1) had been removed from the water by witness #4.  Operator unit 1 was transferred to 5971 for transport to Marine Base where Fox Lake rescue was waiting.  All witnesses stated same that unit #1 was operating carelessly and collided with Unit 2.  Unit 2 avoided 1st collision with unit 1, unit 1 swerved again colliding with unit 2.  Operator unit 1 received a careless operation citation.