At the end of January 1968, was seized by North Korea. "Ranger" turned north and proceeded at full speed from the tropical waters off Vietnam to the frigid waters off North Korea as part of Operation Formation Star. The ship had been on the combat line in Vietnam for one month and was due to for rest and recreation. At the conclusion of the North Korea deployment, the ship had been at sea for 65 days. The carrier stopped at the small Japanese port of Sasebo for several days, then proceeded back to combat operations.