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David Rudisha has won the 800m for the second time, repeating his victory in London with victory at Rio 2016. He is also a policeman - and many of Kenya's star athletes belong to the uniformed services. Why? Elias Makori is managing editor, Nation media group has tried to test Rudisha's skills at police work. (Picture - David Rudisha celebrates after winning the Men's 800m at the Rio 2016 Olympic Games. Credit: Olivier Morin/AFP/Getty Images)