"Hope for the best but prepare for the worst." That's the motto of survivalists in "America Unplugged," which tells unique stories of living off the grid. Though diverse in their scaled-back modes, all "preppers" know that a catastrophic event will cause large-scale loss of electricity and other utilities -- they just aren't sure when. Meanwhile, they produce their food, rely on the sun for heat and power, recycle water and build bunkers. "If you want to live off-grid and you want to romanticize about it, go flip your breaker," one featured survivalist says."See what it's like for a day, two days, two weeks." Security contractor Cade Courtley hosts the series; he wrote 2012's "A Navy SEAL's Secrets to Surviving Any Disaster."