Moment by moment. Decision by decision. The Columbia Space Shuttle disaster is told in forensic detail for the first time. It was the most ambitious project in the history of American engineering: a spacecraft that could launch like a rocket, orbit like a satellite and land like a plane. But on 1 February 2003, 16 minutes from landing, Columbia disintegrated, killing all seven astronauts onboard. This series offers first-hand testimony of NASA engineers and relatives who witnessed the tragedy.