The reason most movies take about 20 minutes or so to get to their "inciting event" is to establish the characters, the stakes, the world, etc. Director William Eubank and writers Brian Duffield and Adam Cozad decide to skip past those 20 minutes in their thriller Underwater and cut right to the action. Unfortunately, this leads to life-and-death decisions with characters we don't really know. If you're going to focus on six people and we know that not all of them are going to survive their perilous journey, then there needs to be a reason to …