Titanic submarine: What happened?

The five people aboard a submersible visiting the wreck of the Titanic died after a catastrophic loss of the pressure chamber, US Coast Guard officials said on Thursday. A "debris field" matching the submersible was discovered by a robotic deep-sea vessel. Here is a timeline of events since the start of the trip, organised by OceanGate Expeditions, to visit the wreckage. Source: CBS News, Reuters, Corporal Jessica Fox, Canadian Forces