Search for missing Titanic tourist sub turns up nothing after noises heard underwater

U.S. Coast Guard Capt. Jamie Frederick speaks to reporters in Boston. The Coast Guard says a search covering 10,000 square miles has turned up no signs of a missing submersible in the North Atlantic. After a Canadian aircraft with sonar capabilities detected underwater noises near the area where a submersible with five people aboard went missing during a dive to explore the wreck of the Titanic in the North Atlantic, more focused searches have so far turned up nothing. Remotely operated vehicles were redirected to the area where the noise...