Soon , the day of the Trinity test arrives , and President Truman receives notice at the Potsdam Conference in Potsdam , Germany . Although it has ended in Europe , the war continues in the Pacific , with Japan refusing to surrender even after the aerial raid of Tokyo . The author briefly mentions history of warfare weapons , up to the new atomic bomb . Eventually , Truman authorizes the bombing of Hiroshima . The crew from Enola Gay is seen on their way to the skies over Hiroshima , and then drop the bomb . The book describes in detail what happens : " The effect was like this : The heat and the light hit before the sound . Now , in a world without sight or sound , a wave of air traveling at more than 800 miles per hour sweeps outwards in all directions . In its wake comes the earth-trembling roar of the atmosphere aflame . The blast is so hot that everything flammable within a few hundred yards of ground zero vaporizes in a flash of smoke . Then suddenly the air pressure spikes . Your eyes and your lungs bulge , swell , and burst . Your eardrums explode . In a few seconds the air pressure settles back to normal , and the wind slow ... and then picks up speed in the opposite direction , sucking everything inward to the churning heart of the explosion . " The news of the bombing becomes worldwide . The Japanese still refuse to surrender . The US prepares to drop a bomb on the city of Kokura , but can not because of the weather ; at the same time , there is not enough fuel to carry the bomb back to the US base in Tinian . As a result , the flight crew ends up dropping the bomb on Nagasaki
Potsdam Conference
Potsdam Conference
Trinity: A Graphic History of the First Atomic Bomb