The U.S. Navy destroyer USS Fitzgerald collided with a merchant vessel off the coast of Japan in the early hours of Saturday morning local time, the Navy's 7th Fleet said. The Fitzgerald was operating about 56 miles southwest of Yokosuka, Japan, when it hit the merchant vessel at approximately 2:30 a.m. local time. In a statement, the 7th Fleet said it was looking into "the extent of personnel injuries," as well as damage.