There was no sound of planes. The morning was still; the place was cool and pleasant. Then a tremendous flash of light cut across the sky. Mr. Tanimoto has a distinct recollection that it traveled from east to west, from the city toward the hills. It seemed a sheet of sun. Both he and Mr. Matsuo reacted in terror.... Under what seemed to be a local dust cloud, the day grew darker and darker.
Hiroshima (1946), ch. 1