As a two-year-old, Gagan Narang directed a toy gun in balloons in a shooting booth at Chennai's Marina Beach. Twenty-seven decades after, he had been staring down the crosshairs in the early Royal Artillery Barracks in London, shooting for a medal in the 2012 Olympics. He clinched bronze in the 10m Air Rifle event that afternoon and together with it, India's first medal of the variant of...