It is known by much evidence that military-trained divers were pre-positioned and present at the ditching site surrounding the time a Honolulu-based Makani Kai Air single-engine, Commuter airline Cessna hit the water, meaning that presence could only be part of an intricate plan that would have had to have been in the works for weeks if not months in advance.
https://www.youtube.com/watch?v=I4NQI-A0faI