The Pentagon did not deny a report by Free Beacon that on Oct. 24, a Chinese submarine shadowed USS Ronald Regan while the carrier at southern end of Japan.
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By 한국어: 대한민국 국군English: Republic of Korea Armed Forces中文: 大韓民國國軍 [CC BY-SA 2.0], via Wikimedia Commons
According to the report, the submarine “sailed very close to” the carrier. The type of submarine and whether it was submerged cannot be determined.