In the early morning hours of September 22nd, 1993, a cross-country train departed from Mobile, Alabama, on its way to Miami. As it headed up along the train tracks out of the city, the train didn't know one important thing - that half of the bridge over the Big Bayou Canot wasn't there anymore.

Videos:

• Seconds from Disaster: The Wreck of the Sunset Limited

• Forensic Files: Visibility Zero

• Rail Disasters: Wreck of the Sunset Limited

Articles and books:

• Barge Pilot Blamed in Fatal Amtrak Wreck

• No Criminal Liability Is Found in Amtrak Bayou Derailment

• Mobile Press-Register 200th Anniversary: Sunset Limited train wreck memories not diminished by passing years

• NTSB report on the accident