Search and rescue efforts went on after dark for seven U.S. sailors missing after the U.S. Navy destroyer USS Fitzgerald collided with a Philippine-flagged container ship more than three times its size off eastern Japan early on Saturday. The Fitzgerald, an Aegis guided missile destroyer, collided with the merchant vessel some 56 nautical miles southwest of Yokosuka, the Navy said. Three aboard the destroyer had been medically evacuated to the U.S. Naval Hospital in Yokosuka, including the ship's commanding officer, Cmdr. Bryce Benson, who was reported to be in stable condition, the Navy said. The other two were being treated for lacerations and bruises, while other injured were being assessed aboard the ship. Search and rescue efforts by U.S. and Japanese aircraft and surface vessels were continuing for the seven missing sailors.