The tug arrived off Saipan on D-day, 15 June. The following day, she helped to fight off two enemy bombers which flew over her formation. She remained in the Marianas until late July, towing pontoon bridges to the beaches, retracting landing craft, and assisting in repairs and salvage operations. By the time she departed Saipan, that island had been declared secure, but the struggles for Tinian and Guam continued. On 26 July, "Tekesta" headed for the Marshalls, arriving at Eniwetok on the 29th. Following four days turnaround time there, the tug made a round-trip voyage to Guam, returning to Eniwetok on 14 August. She remained at the atoll until the second week in September doing extensive salvage work with grounded craft and towing barges.