Developers say they'll have enough food, water and electricity to live off the grid for a yearThere's a group of North Texans preparing for impending doom. But they're not just stockpiling guns and provisions. They'll have underground bunkers, tunnels and even a DNA vault. Make no mistake, they plan to live in luxury and style. underway on a unique new neighborhood called Trident Lakes. Over the next few years, fields of grass will conceal 400 underground bunkers, a tunnel system and even a vault to store DNA. It's all part of a plan to prepare for any impending doomsday. "You...