On November 13th, 2015 a series of coordinated terrorist attacks lead to the worst loss of life Paris has seen since World War II. Scores are killed and hundreds wounded. ISIS claims responsibility. This one-hour special takes an in-depth look at the Paris terror attack and what it means for the world and for the United States. Is this attack a radical shift in strategy for the Islamic State and what are we doing to prevent these atrocities from reaching our shores?