as scott pelley first reported last year, one of them, ray hinton, was on death row. oo vividly, the alabama electric chair and the scent that permeated the cell block when a man was met by 2,000 volts. >> pelley: hinton waited his turn for nearly 30 years, until april 2015. that's when ray hinton stepped out of the shadow of execution, taking the first steps he chose for himself since 1985. what was that moment like? >> ray hinton: as though i was walking on clouds. i wanted to get away, in case they changed they mind, you know. >> pelley: you still didn't believe it. >> hinton: i was not going to allow myself to really believe that i was free, until i was actually free. >> pelley: free to visit his mother, who went to her grave believing her son would be executed. the cemetery was hinton's first destination. and he was startled by a world that had moved on without him. >> hinton: we headed toward the graveyard and a voice come on and said, "at two-point-so-many miles, turn right." and i said, "what the hell? who is that?" and he said, his g.p.s. tracker. i knew i did

color="#ffff00">>> ray hinton stepped out of prison after nearly 30 years on death row, a free man. what was that moment like? >> as though i was walking on clouds.