第38任務部隊
On the morning of 29 April, "Petrof Bay" met with the Fast Carrier Task Force (Task Force 58) of the Fifth Fleet, whereupon she began providing replacement aircraft to the task force in preparation for a follow-up strike against the Japanese naval stronghold of Truk of the Caroline Islands, which had previously been heavily damaged in Operation Hailstone. She then headed to Majuro Atoll of the Marshall Islands, arriving on 3 May, where she replenished. She then rendezvoused with the Fast Carrier Task Force again, after it had successfully conducted its strike, providing all of her aircraft, as well as most of her aviation spares and material to the fleet carriers. She also loaded onboard damaged or obsolete aircraft, as well as salvage equipment for transportation back to the West Coast.