Race Against Time: Search for Lost Manned Submersible at Titanic Wreckage.

A manned submersible carrying five people, including one pilot and four mission specialists, lost contact with its mother ship while exploring the wreckage of the Titanic. The submersible has just four days of emergency capability and is located in a remote area 13,000 feet deep and 900 miles east of Cape Cod, Massachusetts. The US Coast Guard and the Royal Canadian Air Force are deploying more aircraft and vessels to aid in the search, which is complicated by foggy conditions and waves of 3 to 6 feet. The submersible's dwindling oxygen supply is a major concern, and search and rescue operations are ongoing.