YOKOSUKA NAVAL BASE, Japan — A series of power outages has plagued the home of the U.S. 7th Fleet over the past week, with some sailors and families going without electricity for more than 24 hours.

YOKOSUKA NAVAL BASE, Japan — A familiar face has taken command of America’s largest overseas Navy base, while his predecessor prepares for a new role with the U.S. 7th Fleet. Capt. Jonathan Hopkins ...