John Folkes could not have been in any greater danger.
Strapped to the ‘rumble seat’ behind the pilot of a Canberra bomber, battling the shockwaves of a nuclear bomb, the terrified 19-year-old was about to plunge into the maelstrom of a mushroom cloud.
Holding a photograph of that moment in 1956, with his plane no bigger than a tiny fly next to the fireball, John now knows that his blood was part of the same Cold War radiation experiment - and the results have been hidden from him for 67 years.
