The police officers who directed others away from danger, while moving towards it themselves. The ambulance crews and staff at nearby hospitals who fought to save lives and comfort the injured and traumatised. My colleague Tobias Elwood, who did his best to save a dying police officer. Such people epitomise public service. I said after last year's tram crash that we don't say thank you enough. So to all those who helped to keep my staff and I safe: thank you.