People release paper lanterns on the Motoyasu river facing the gutted Atomic Bomb Dome in remembrance of atomic bomb victims on the 67th anniversary of the bombing of Hiroshima, in this photo taken by Kyodo, August 6, 2012. Mandatory Credit.
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An aerial view of Hiroshima after the atomic bomb was dropped
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Priscilla 37-kiloton balloon shot test firing in fiery mushroom cloud rising above desert landscape at NV atomic bomb Test Site.
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Bust in front of destroyed cathedral two miles from the atomic bomb detonation site, Nagasaki, Japan, 1945.
A South Korean protester smashes a mock atomic bomb during a rally against North Korea's suspected nuclear weapons program
Early Testing: A mushroom cloud rises over a 1951 atomic bomb detonation in Nevada.
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Shipboard laboratory equipment used for measuring sea water to detect any traces of radioactivity after an atomic bomb test in Bikini lagoon, 1946.
Shuji Kajiyama / AP
Tsuyuko Nakao, 92, right, and Kinuyo Ikegami, 77, both bereaved family members of the atomic bomb victims, console each other as they pray for the victims in front of the cenotaph at the Peace Memorial Park in Hiroshima, western Japan, Friday, Aug. 6, 2010.