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Today, the programme is live from the National Ambulance Resilience Unit in Wiltshire. We see how they train paramedics to deal with the most hazardous emergencies they can possibly face - from train crashes to chemical incidents. There is also a powerful appeal from the victim of a rape - to help catch the man who attacked her when she was just a schoolgirl more than 30 years ago. Rav Wilding checks out what has been described as the world's first crime-fighting shoe scanner.