"Healy"s next major operation was the neutralization of Truk, a major Japanese naval base in the Pacific. Departing Majuro 12 February, the carrier group attacked Truk 17–18 February with striking thoroughness, sinking or rendering useless most of the shipping and aircraft and eliminating Truk as a major threat to the allied plans. After the raid "Healy" and the carriers steamed to the Marianas, fought off several air attacks 22 February, and delivered important strikes against Saipan, Tinian, and Guam, America's next objectives in the Pacific.