Fly with the US Air Force through the 20th century and explore its incredible evolution, from the early pioneers to the modern superpower it is today. The 20th century sees rickety box kites turn into supersonic jets with apocalyptic firepower.

A look at the increasingly powerful US Air Force and its range of conflicts across the world during the tense days of the Second World War. Disasters and losses; Jimmy Doolittle changes fighter escort tactics; shuttle bombing; the Tuskegee airmen.

World War II's end; the Berlin Air Lift; the Strategic Air Command; the Korean War; the Cold War; the missile race; the doctrine of mutual destruction; the Cuban Missile Crisis.