From the liner notes

The story of the B-29 and its crew that dropped the world's first atomic bomb, Enola Gay combines two compelling, topflight documentaries that tell the remarkable truth of America's decision to forever alter the course of history. Features Enola Gay: Rain of Ruin and Hiroshima: The Decision to Drop the Bomb. Includes formerly top-secret and never-before-seen footage, and extensive interviews with soldiers, scientists, survivors and eye witnesses.