The very large PACEX 89 in the North Pacific involved the USN, Canadian Navy, Japanese Maritime Self-Defence Force, and ROK Navy. At the end of Exercise PACEX '89 a 54-ship formation was assembled for photos. It included the flagship, , the Battle Group, the Battle Group, two battleship surface action groups formed around and , and a Japanese Maritime Self-Defence Force task force. "Missouri" and "New Jersey" performed a simultaneous gunfire demonstration for the aircraft carriers and during PACEX. The highlight of PacEx for "Missouri" was a port visit in Pusan, Republic of Korea.