Alan Greenhalgh served for 14 years in the New Zealand Police. As a sergeant he was an active member of the police diving, search and rescue and armed offenders squads (AOS) and formed and led a team policing unit tasked with controlling rampant, violent motor cycle gangs and other unruly elements before resigning and emigrating to Western Australia. After knocking around trying various occupations, including security officer at the Argyle Diamond Mine he eventually joined the Australian Protective Service (a division of the Federal Police). Alan quickly rose to the rank of Inspector and established and led the service’s first counter terrorist unit at Perth airport. As the APS security technologist he conducted multiple security reviews for government agencies before resigning to develop a security management plan and a dedicated security team for Western Australia's parliament house. Alan also held a factual investigator's and agent's license. He and wife Chris have 10 grandchildren