HCNN - Missing Titanic sub occupants dead, pieces of vessel found, Coast Guard announces

Missing Titanic sub occupants dead, pieces of vessel found, Coast Guard announces
The U.S. Coast Guard offered their deepest condolences to the families of the passengers aboard a Titanic-exploring submersible after debris from the sub was found on the sea floor. The debris was "consistent with a catastrophic event" suffered by the pressure chamber of the sub. Jericka Duncan anchored CBS News' special report.