Good high school friend of mine was career Coast guard. He was a flight commander for one of those big helicopters and retired with some high falutin’ upper level officer rank.
He told me that there were a lot of details he couldn’t tell me but that he’d lost several of his colleagues in crashes.
He also implied that there were some bullets flying out of fast boats coming from the south.
Poor guy took up regional jet piloting right after he retired and almost immediately got the Parkinson’s. To conclude and show his character, he self reported himself out of a job long before the symptoms were externally visible.