Navy does not rule out punishing captain asking for further precaution

"I don't know who leaked the letter to the media. That would be something that would violate the principles of good order and discipline, if he were responsible for that. But I don't know that," Acting U.S. Navy Secretary Thomas Modly said when asked multiple times if the captain would be punished.

"The fact that he wrote the letter up to his chain of command to express his concerns would absolutely not result in any type of retaliation," Modly said.