Reply #13: The only thing I can see going wrong is this:

[jmondine]

An American nuclear submarine, chasing an odd glowing craft, crashes near the site, and the crew is offered triple pay to join a group of navy seals to search the sub for survivors. Afterwards, the commander of the seals is given secret orders to retrieve and arm one of the sub's nuclear warheads. Meanwhile, the crew encounters members of a strange alien civilization existing at the bottom of an abyssal trench. The commander, suffering from pressure sickness, uses an ROV to pilot the nuclear warhead straight down the trench. The aliens, in retaliation, threaten to drown the coastlines of every continent on Earth with giant tidal waves the likes of which have never been seen.

Let's just hope that one of the crew members can take an experimental diving suit on a suicide mission down to the bottom of the trench and disarm the warhead, thus demonstrating to the aliens the human potential for self sacrifice and persuading them to halt the tidal waves just before they crest.