According to a declassified command history for the nuclear-armed battleship "New Jersey", during her transit through the Sea of Okhotsk on 27–28 September 1986, "close passes" were made by Soviet Bear and Badger bombers, a Hormone helicopter, and a May maritime patrol airplane. A and two "Grisha III" frigates also shadowed the U.S. ships. The maneuver, according to the command history, "marked the first time a U.S. battleship had operated in the Soviet Navy's backyard." Following an overhaul at Long Beach which lasted into 1988 "New Jersey" returned to the Pacific Ocean, this time operating as part of a surface action group. The battleship operated near the coast of Korea prior to the opening of the 1988 Summer Olympics in Seoul, South Korea, then departed for Australia to participate in the Australian bicentennial celebrations.