Their story began with terror in the skies...it ended in an unforgettable moment of triumph and tragedy. On board United Airlines Flight 93, one of four commercial aircraft hijacked by terrorists on September 11, ordinary citizens battled back against the forces of evil that would turn the world upside down. in the days after the worst terrorist attacks in American history, pieces of the Flight 93 story would capture the imagination of the nation. But it is only after years of painstaking investigation , that the complete, and largely untold story, of Flight 93 can be told. "Portrait of Courage: The Untold Story of Flight 93" brings to light facts as revealed by those closest to the tragedy, the family members of those who lost their lives.