'When I was being trained in first aid, it never crossed my mind I’d be doing it for my own child'

Cork father-of-five Tim Kelleher could never have guessed that his volunteer training with the Irish Red Cross would one day save his own son’s life. He talks to Helen O’Callaghan about the day his one-year-old choked, about doing CPR on him, and the subsequent impact of that momentous 24 hours on his life and his volunteering.