Search for Missing Titanic Submersible Intensifies with New Clues

Rescuers have detected underwater sounds for a second day in the search for a submersible that disappeared on its way to the Titanic wreckage site. The search area is twice the size of Connecticut in waters 2 1/2 miles deep, and authorities are still holding out hope of saving the five passengers onboard. The U.S. Navy is sending a specialized salvage system capable of hoisting "large, bulky and heavy undersea objects such as aircraft or small vessels." The lost submersible could be as deep as about 12,500 feet below the surface near the watery tomb of the Titanic. Newly uncovered allegations suggest there had been significant warnings made about vessel safety during the submersible's development.