My guess based on what I saw was that a waverunner was operating too close to the beach and hit someone. We saw law enforcement questioning waverunners over there around 2pm, then saw 2 patrol boats take off at high speed w/ lights flashing when we were entering the harbor, and later saw they had a guy in handcuffs.
Yet another example of why personal watercraft should be outlawed. And I am semi-serious here. Why is it these craft always tend to be operated by people with very little conscience or sense of responsibility? Bunch of redneck mulletheads who can't afford a real boat.

Rant complete.