Counter terrorism freefall and lands on a ship and kill the
terrorists.
This has been done before in real life. If im not wrong it was in
the 1970s in the mediterranean when an Italian Cruiseliner was
seajacked.
You are right about the element of surprise, cause the commando did
the assault on bright daylight and it sort of went wrong. Some
commandos landed on the water instead and had to be saved by the
passengers on the deck, due to strong winds.
But, however, not a lot of people were killed because in this
situation the terrorists prefered to hide in the labyrinth ship
hotel rooms and not react to the commandos on the deck.