9/11: The Pentagon

On September 11, 1941, the U.S. War Department broke ground on a massive new five-sided headquarters that would rise to become the ultimate symbol of the American military. Sixty years to the day after construction began, a hijacked airliner crashed into the building as part of the largest coordinated terror attack ever on American soil. This is the dramatic story of what happened inside the building in the harrowing minutes after impact.