Rather than focus on the negative side of things, Cairn decided to join the Police Service so that he could stop this kind of attack happening to others.
Yn hytrach na chanolbwyntio ar yr ochr negyddol, penderfynodd Cairn ymuno â’r Gwasanaeth Heddlu er mwyn iddo allu atal y math yma o ymosodiad rhag digwydd i eraill.