The development of the jet up to and including the Korean War. Pre-war developments, combat jets of World War II. Breaking of the sound barrier. The Right Stuff - how US pilots continued to investigate supersonic flight in X-craft, mainly colour footage. Combat jet developments. The first jet airliners - British Comet and others. Jet Battles over Korea - US F-80s and F-86s battle it out with MiG 15s, including what it was like to be an early jet combat pilot.