The destroyer returned with her carrier group to Manus Island on 21 September, and steamed to Ulithi to form an important task group for operations in the western Pacific. The giant force, numbering 17 carriers and supporting surface ships, rendezvoused at sea, and launched strikes against Okinawa on 10 October. Then on 12 October, the carriers moved toward their real objective—Formosa. In a devastating 3 days of air attacks, carrier planes did much to destroy Formosa as a supporting base for the Japanese in the island battles to come. Japanese forces retaliated with heavy and repeated land-based air attacks. "Healy" brought down one bomber and assisted in downing many more during these attacks, in which and were damaged.