"Lights Out" author Ted Koppel explains how America's power grids are vulnerable to cyber attacks.
Tags: ted koppel, exclusives, extended interviews, interviews, birthdays, family, books, nightline, iran, phones, media, elections, candidates, winston churchill, america, power outage, doomsday, technology, internet, terrorism, security, isis, 20/20, apocalypse/doomsday
© 2015 Comedy Partners. All Rights Reserved. Comedy Central and all related titles, logos and characters are trademarks of comedy partners.