tired little boy born at just 27 weeks. weighing just one kilo. always boy who has defied all medical odds, his survival can only be described as a miracle. he should be dead. in fact, the doctor who delivered him pronounced him dead. >> maybe he knew how much we wanted him for a long time. >> reporter: how lucky do you feel? >> very lucky that we've got both of them. >> reporter: the 25th of march this year was both the best and worst day of kate and david's lives. the day their eagerly a it with aed twins, jamie and his baby sister, emily, were born. >> three days of labor and all of a sudden they were there and i knew i wouldn't be able to hold them because they were so small. >> the joy that we held when they told us that it was a little boy, i wanted to throw cart wheels. >> reporter: but within minutes, the family's joy turned to