As seen on 60 Minutes, a thought-provoking, chilling, and eerily prescient look at "prepper" communities around the world that are building bunkers against a possible apocalypse. Currently, 3.7 million Americans call themselves preppers. Millions more prep without knowing it. Bradley Garrett, who began writing this book years before the 2020 Covid-19 pandemic, argues that prepping is a rational response to global, social, and...