On May 12, 1989, Southern Pacific freight train 7551 rocketed down California’s Cajon Pass at over 100 mph before derailing into a San Bernardino neighborhood. Caused by fatal weight miscalculations and failing brakes, the crash killed four people and destroyed seven homes. But thirteen days later, a second catastrophe struck the exact same street when a damaged underground pipeline ruptured, igniting a massive inferno. This documentary investigates the series of tragic human errors, mechanical failures, and oversight lapses that led to one of the most disastrous chain reactions in American transportation history.
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