On 18 April 1942 the aircraft carrier USS Hornet (CV-8) launched U.S. Army bombers for the first U.S. air attack on Japan. The mission was led by Lieutenant Colonel James H. Doolittle. Here, an Army Air Force B-25B bomber takes off at the start of the raid. Note the men watching from the signal lamp platform at right. National Archives Photo 80-G-41196.