In a race against the clock on the high seas, an expanding international armada of ships and airplanes searched Tuesday for a submersible that vanished in the North Atlantic while taking five people down to the wreck of the Titanic.
U.S. Coast Guard officials said the search covered 10,000 square miles (26,000 square kilometers) but turned up no sign of the lost sub known as the Titan. Although rescuers planned t