The U.S. Navy announced a pause in its global operations and patrols and has begun a broad investigation after the destroyer USS John S. McCain on Monday collided with a merchant vessel, leaving 10 sailors missing, the second such incident in just over two months.

The response by the U.S. military signals the Navy believes it needs to examine whether there may be institutional problems behind the deadly collisions, and that it may need to retrain some of its personnel in seamanship.

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