The work was completed by 9 June, and "Intrepid" began two months of training around Pearl Harbor. Starting in early September, "Intrepid" joined operations in the western Caroline Islands; the Fast Carrier Task Force was now part of the Third Fleet under Admiral William Halsey Jr., and had been renamed Task Force 38. On 6 and 7 September, she conducted air strikes on Japanese artillery batteries and airfields on the island of Peleliu, in preparation for the invasion of Peleliu. On 9 and 10 September, she and the rest of the fleet moved on to attack airfields on the island of Mindanao in the Philippines, followed by further strikes on bases in the Visayan Sea between 12 and 14 September. On 17 September, "Intrepid" returned to Pelelieu to provide air support to the Marines that had landed on the island two days before.