article_snippet.sent: The two incidents have raised concerns about the security of shipping lanes in the strategic Strait of Hormuz, Pentagon spokesman Colonel Steven Warren said.
article_snippet.sent: What they are doing is keeping an eye on things.
article_snippet.sent: But US officials said privately that no military action was imminent.
article_snippet.sent: the group also said Wednesday that the crew was safe but the crew remained tight-lipped about any commercial dispute.
highlights_snippet.sent: Revelations have raised concerns about the security of shipping lanes .
  