Like any child would have done, seven-year-old Howard Kakita wanted to get a good view of the fearsome B-29 bombers flying overhead.
So 80 years ago today, in the Japanese city of Hiroshima, he climbed onto the roof of his grandparents' house with his brother and peered into the sky.
Moments later, the bomb that changed the world - dropped from the plane called Enola Gay - detonated less than a mile away.
Somehow though, Mr Kakita, now 87, survived the nuclear blast, along with his brother and both grandparents, whom he and his sibling had been visiting from their home in America.
Speaking today to mark the anniversary of the disaster, Mr Kakita revealed the seconds leading up to the explosion, and told how he was knocked out 'instantaneously' by its force.
