Returning for a third season, National Geographic's hit series Doomsday Preppers explores the lives of otherwise ordinary Americans who are preparing for the end of the world as we know it. Unique in their beliefs, motivations, and strategies, preppers will go to whatever lengths they can to make sure they are prepared for any of life’s uncertainties. And with our expert’s assessment, they will find out their chances of survival if their worst fears become a reality.