RedactedNarrative: Vessel one was being followed by vessel two.  Vessel two was following off to the starboard side of vessel one.  Vessel one made a U turn to right and had a head on collision with vessel two.  Both vessels were PWCs and everyone on both vessels were ejected.  Both operaters were wearing PFDs and had kill switches attached.  The Passenger on vessel two was also wearing hear PFD as well.  The passenger on vessel two went to the hospital and received five stitches in her left leg.