When Teinaki's heart stopped - St John Emergency Medical Dispatcher Aaron was there on the line, to talk his brother Toka through performing CPR - something he'd never done before.
Toka remembers: "He told me to push down on Teinaki's chest and start the compressions and not to stop. So that's what I did. He said he was organising the ambulance to come and all I has to do was keep going.
It was his help that saved Teinaki's life. All I did was exactly what he told me to do."