Japan, U.S. hold navy drills off Koreas

"U.S. and Japanese warships, led by the USS Abraham Lincoln carrier strike group, are
conducting their joint naval exercise in waters between Japan and the Korean Peninsula for the first time in five yeas, in a show of their close military alliance amid growing speculation of North Korea's missile or nuclear testing later this week.

The U.S. 7th Fleet and Japan's Maritime Self-Defense Force said Wednesday they conducted a joint naval exercise at the Sea of Japan on Tuesday and Wednesday." JapanToday