"9/11: The Day That Shook the World" commemorates the 20th anniversary of the deadliest terrorist attacks in American history. Former New York City Mayor Rudy Giuliani, former NYPD Commissioner Bernard Kerik, former FDNY Commissioner Tom Von Essen, and other guests share personal stories of loss, grief, and heroism on that tragic day. From the billowing smoke and destruction in New York City, Washington D.C., and Shanksville, PA, American patriotism soared, a nation stood united, and the human spirit triumphed over evil-- unbroken, determined, and stronger than ever.—Fox Trail Productions