On April 19, 1995, Timothy McVeigh, a 26-year-old U.S. army veteran, detonated a 7,000-pound truck bomb outside the Alfred Murrah Federal Building in downtown Oklahoma City, claiming the lives of 168 innocent people. We take a look back at the events that led up to the largest domestic terrorist attack in the history of the United States. Told through exclusive interviews with survivors of the bombing, first responders, FBI investigators, and Timothy McVeigh himself in extensive never-before heard audio recordings taped before his execution, this program takes you inside the mind of a terrorist to try to understand “How It Really Happened.”