John Curtis was born in Wollongong, NSW, and is a former Australian Army Commando and Army Officer. He is also an expert in human survival and a graduate of The Tracker school in the USA. He has been a guest lecturer at the Woodlore school in the UK, the Ragnarok Primitive Skills Gathering in Sweden, the RAAF Combat Survival Wing, Townsville and has taught survival to the military from 14 countries. In 2004 he went to Thailand on a promise to his daughter to rescue children from brothels and from that, founded The Grey Man organisation in 2008. He lives in Brisbane with his beautiful Japanese wife and his lovely daughter.