Ka kammala wannan jumla: Kafin a aiwatar da Operation MI, Jafananci sun yanke shawarar karɓar tsibirin Aleutian. A ranar 3 zuwa 4 ga Yuni, 1942, jiragen saman Japan daga masu jigilar haske guda biyu da kuma buga Amurka a karo na farko a kan garin Unalaska, Alaska, a Dutch Harbor a tsibirin Aleutian. Da farko, Jafananci sun shirya kai hari kan Dutch Harbor a lokaci guda tare da
harin Midway, amma harin Midway ya jinkirta da rana daya. Harin ya yi mummunan lalacewar Dutch Harbor, amma an kashe Amurkawa 43 kuma wasu 50 sun ji rauni a harin.