At least 15 "mishaps" have resulted in injuries or damage, the Navy says. The new policy bans the devices on ships, submarines, aircraft, boats, craft and heavy equipment.
The president-elect appeared to disparage the quality of the storied rival game, telling CBS Sports that, "I don't know if it's necessarily the best football, but it's very good."
The Navy's littoral combat ships are plagued by problems including engine failure and power losses. The ships were supposed to be nimble and versatile but instead have proved costly and ineffective.
Even as China presses ahead with a military buildup in the South China Sea, the U.S. invited it to take part in the world's largest naval exercise at Pearl Harbor in Hawaii.
Capt. Daniel Dusek pleaded guilty last year to bribery, admitting he gave classified information in exchange for access to prostitutes and other favors. He's now been sentenced to 46 months in jail.
President Barack Obama could be close to nominating the first-ever woman to become the head of a military combatant command, Pentagon sources tell NPR.
Christopher Clark, an engineer turned whale biologist, wired the world's oceans with hydrophones. Whales sing as they migrate, he learned. And the ship sounds clouding the ocean can deeply interfere.