This isn't a trailer for the next Tom Clancy movie. These are real U.S. Navy SEALs showing how they get into enemy territory from the sea. They get deployed in a mini-sub launched from a nuclear submarine. Then they get out as they approach the shore at night, ready to complete their mission.
DISCUSSION
I'm kinda sure that very transport method is featured in COD MWII (I don't wanna sound like one of those kids that thinks they know everything because they play COD, but I'm just drawing this from memory)