Loading OWI leaflets for transport to the US air field on Saipan, 1945. On August 12, aircraft runs departed Saipan at 1:30, 4:30, 7:30 and 11:30pm, delivering to the people of Japan the news of their government’s surrender offer. The 4” x 5” leaflets rained down by the millions, telling the Japanese people: These American planes are not dropping bombs on you today. American planes are dropping these leaflets instead because the Japanese Government has offered to surrender.