Prior to the Marianas invasion, however, "Healy" screened "Enterprise" on a series of raids in the western Pacific designed to aid the coming operations. After a stop at Espiritu Santo the ships struck the Palau Islands 30 March, and after beating off Japanese air raids launched an attack on Yap and Ulithi the next day. "Enterprise" planes attacked Woleai 1 April 1944, and returned to Majuro five days later. "Healy" put to sea again 14 April to screen "Enterprise" during strikes on New Guinea, supporting operations and landings at Tanahmerah Bay. Another heavy raid on the Japanese base at Truk 29–30 April completed this highly successful operation, and she returned to Majuro 4 May.