What we Know About Submersible As They Start Running Out of Air

A submersible with five people on board vanished while exploring the wreck of the Titanic on June 18. Here's what we know so far. (Video: Jackson Barton/The Washington Post)

• What’s happening? The tiny submersible vanished Sunday during a trip to the Titanic wreck in the North Atlantic. Its 96-hour oxygen supply is estimated to expire today.
• The latest: A multinational fleet of ships and planes is searching a patch of ocean twice the size of Connecticut for any sign of the craft. Follow live updates here.
• What else to know: The CEO of the company that operates the sub — who is one of the five people on board — said last year that he was worried about the vessel not surfacing.