Headquartered in Yokosuka, Japan and responsible for the defense of South Korea, the U.S. Navy’s 7th Fleet has been beset by problems this year. The most serious incidents occurred over the summer when two destroyers, the USS Fitzgerald and USS John S. McCain, were involved in separate deadly collisions with heavy loss of life. Those events raised serious concerns about the safety and readiness of U.S. warships in the Pacific, as well as morale throughout the Navy in general.