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 jiragen ruwa biyu da
ya buga nahiyar Amurka a karo na farko da birnin Unalaska, Alaska, a Dutch Harbor a cikin tsibirin Aleutian. Asali, Jafananci sun shirya kai hari kan Dutch Harbor a lokaci guda tare da harin Midway, amma harin Midway ya jinkirta da rana ɗaya. Harin ya yi mummunan lalacewar Dutch Harbor, amma an kashe Amurkawa 43 kuma wasu 50 sun ji rauni a harin.