Titanic tourist submersible destroyed: How it happened

Wreckage from the missing Titan submersible has been found near the site of the Titanic. 

All those who were on board are lost at sea. 

Andrew Chang explains what happened and how the Titan was destroyed.

Retired Navy Captain Weighs in on Missing Titanic Submersible

Rescuers are racing against time to find five people who are missing after OceanGate’s submersible, Titan, disappeared while on an expedition to the remains of the Titanic shipwreck. 

The U.S. Coast Guard said the group had about 40 hours of emergency oxygen left as of early Tuesday afternoon.