Following the collision between the USS John S. McCain with an oil tanker on August 21, several experts in cyber security and satellite navigation systems have raised the possibility that there might have been cyber interference with the ship’s satellite navigation system. The experts’ suspicions were increased by the fact that the John S. McCain was the fourth collision involving a ship of the Seventh Fleet this year. The others occurred on January 31, when the guided missile cruiser USS Antietam ran aground off the coast of Japan; on May 9, when another cruiser, the USS Lake Champlain, was struck by...