Air traffic controllers are meant to stop aircrafts from flying into one another... and if they fail, computer systems are installed to warn pilots of a coming collision. But sometimes these humans and computers give conflicting and confusing advice. Who to believe?
When a cargo plane and a Russian airliner collided in just such a situation, the authorities scrambled to work out how to prevent a repeat of the disaster... but a grieving father decided to seek revenge on those he held responsible.
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