him and another SEAL arming the warhead to attack the NTIs. To try and stop him, Bud fights Coffey but Coffey escapes in a mini-sub with the primed warhead; Bud and Lindsey give chase in the other sub, damaging both. Coffey is able to launch the warhead into the trench, but his sub drifts over the edge and implodes from the pressure, killing him. Bud's mini-sub is inoperable and taking on water; with only one functional diving suit, Lindsey opts to enter deep hypothermia and trigger her mammalian diving reflex when the ocean's cold water engulfs her. Bud swims back to the platform with her body; there, he and the crew use a defibrillator and administer CPR, they manage to successfully revive her. It is decided that the warhead needs to be disarmed, which is more than 2 miles below them. One SEAL, Ensign Monk, helps Bud use an experimental diving suit equipped with a liquid breathing apparatus to survive to that depth, though he will only be able to communicate through a keypad on the suit. Bud begins his dive, assisted by Lindsey's voice to keep him coherent against the effects of the mounting pressure, and reaches the warhead. Monk guides him in successfully disarming it. With little oxygen left in the system, Bud explains he knew it was a one-way trip, and tells Lindsey he loves her. As he waits for death, an NTI approaches Bud, takes his hand, and guides him to a massive alien city deep in the trench. Inside, the NTIs create an atmospheric pocket for Bud, allowing him to breathe normally. The NTIs then play back Bud's message to his wife and they look at each other with understanding. On Deep Core the crew is waiting for rescue when they see a message from Bud that he met some friends and warns them to hold on. The base shakes and lights from the trench herald the arrival of the alien ship. It rises to the ocean's surface, with Deep Core and several of the surface ships run aground on its hull. The crew of Deep Core exit the platform, surprised they are not dead from the sudden decompression. They see Bud walking out of the alien ship and Lindsey races to hug him. Special Edition In the extended version, the events in the film are played against a backdrop of conflict between the United