Greg Reynolds joined the Royal Australian Navy at fifteen years of age to complete twelve months of schooling as a junior recruit at HMAS Leeuwin, Western Australia. After graduating from Leeuwin, he was deployed to the Naval Air Station, HMAS Albatross, Nowra, New South Wales to train as an aircraft technician. After successfully passing this training, he worked on "Skyhawk" and "Macchi" jet engines and airframes. The two squadrons he served on while at Albatross, were 805 and 724 squadrons. He also worked in the salvage section, specialising in the operation of mobile cranes for the retrieval of downed aircraft. His sea deployments were limited to Southeast Asia and America, aboard the Aircraft Carrier, HMAS Melbourne.
After completing his required six years, he decided to exit the Navy to look for other career options as a civilian. He eventually joined the Queensland Fire and Rescue Service in 1980. For thirty-seven years, he felt privileged to serve the community as a professional firefighter, in Brisbane and the Gold Coast regions. He attained a senior officer rank of Superintendent before retiring as the Acting Director of the Queensland Combined Emergency Services Academy, at Lytton in 2017.
He achieved higher academic qualifications as a mature aged student, obtaining Post Graduate degrees in Executive Management, Applied Science and Investigations.