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'Jericho': 15 Keys to the Story So Far

THE BOMBS
Throughout the course of season 1, we find out that 23 hydrogen bombs were scheduled to go off in Denver, Atlanta, Chicago, Philadelphia, San Diego, Los Angeles, Dallas, Houston, Detroit, Minneapolis, D.C./Baltimore, St. Louis, Boston, Kansas City, Miami, Phoenix, Charlotte, New York City, Seattle, San Francisco, and Columbus. All we know for sure is that the three bombs set for New York didn't go off and the one set for Columbus didn't make it to its destination.