Missing Titanic sub search continues

U.S. Coast Guard Capt. Jamie Frederick told reporters Wednesday that the Coast Guard isn't sure what the underwater noises a Canadian P-3 aircraft picked up in the Titan search area are. "We don't know what they are," he said. "The good news is what I can tell you is we're searching in the area where the noises were detected and we'll continue to do so." The Coast Guard posted on Twitter early Wednesday morning that a "Canadian P-3 aircraft detected underwater noises in the search area."

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