Before Operation MI could be carried out, the Japanese decided to take the Aleutian Islands. On June 3–4, 1942, Japanese planes from two light carriers and struck the continental U.S. for the first time against the city of Unalaska, Alaska, at Dutch Harbor in the Aleutian Islands. Originally, the Japanese planned to attack Dutch Harbor simultaneously with its attack on Midway, but the Midway attack was delayed by one day. The attack only did moderate damage on Dutch Harbor, but 43 Americans were killed and 50 others wounded in the attack.