Officers who dropped the first atomic bomb. The officer members of the crew of the Boeing B-29 aircraft Enola Gay which dropped the world's first atomic bomb on Hiroshima, Japan. The crew members are (left to right): Major Thomas Ferebee (bombardier), Colonel Paul Tibbets (pilot), Captain Theodore Van Kirk (navigator) and Captain Robert Lewis. The bomb, code-named 'Little Boy', detonated some 565 metres above the centre of Hiroshima on the morning of 6 August 1945. The bomb had an explosive energy equivalent to 12.5 kilotons (12,500 tons) of TNT. Over 155,000 people died in Hiroshima, either during the raid or from radiation-related illness within the first year.