 Complete the following phrase:  At the outbreak of the Pacific War, Harada was a Mitsubishi A6M Zero pilot assigned to the aircraft carrier Sōryū, which formed part of the 1st Air Fleet. In this role, he took part in the 1st Air Fleets series of operations during the initial months of the war. On 7 December 1941, he flew protective patrols over the fleet during the Attack on Pearl Harbor, and did not see any combat. Harada also escorted the aircraft which 