On Aug. 9, 1945, Sakue Shimohira heard the sirens and ran with her younger sister and a nephew into an air-raid shelter about 800 meters from ground zero in Nagasaki.
With the flash and then a blast, the young girl briefly lost consciousness. Afterward, they were forced to stay in the shelter until the fires blazing outside lessened and then fled to a relative's house.
A few days later, she found the remains of her mother and older sister under the rubble. Their bodies were burned so badly they fell apart in her hands.