Complex sentence: The program profiles various survivalists, or "preppers", who are preparing to survive the various circumstances that may cause the end of civilization, including economic collapse, societal collapse, and electromagnetic pulse.
Split into simpler sentences: The program profiles various survivalists, or "preppers," preparing for the end of civilization. The series interviews people who are preparing to survive the various circumstances during which life as we know it might come to an end, including economic collapse, societal collapse, and electromagnetic pulse.