When Sydney is in trouble, only Iron Boy can save the day.On Thursday, the New South Wales Police and Make-A-Wish Foundation teamed up to help Dom, a 9-year-old boy battling cystic fibrosis, live out his dream of being a superhero.The eventful day began at 9 a.m. AEDT, according to a police statement, when Dom and his family flew by helicopter to the police headquarters in Parramatta for an urgent briefing.