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"Lights Out": Ted Koppel on electric grid cyber threats

| What happens when terrorists go after U.S. power grids? Emmy and Peabody Award winner Ted Koppel investigates that question in his new book, "Lights Out: A Cyberattack, A Nation Unprepared, Surviving the Aftermath." The veteran newsman joins "CBS This Morning" to discuss the potentially massive toll from a possible full-scale cyberattack.