RedactedNarrative: Unit 1 was operating in the vicinity of Short Stay on Lake Moultrie when they pulled next to another jet ski to talk. While talking, passenger, lost her balance causing the PWC to roll over. Passenger and Operator went into the water while both were wearing a PFD. Passenger began to panic trying to get back on the PWC. Operator was talking to her to try and calm her down. Then she became unconscious in the water face up, then soon passed away.