From 1969 to 1996, Terry worked for the Calgary Police Service, serving in numerous areas. He left the Calgary Police as the Inspector-Professional Standards and Director of Human Resources for the 1997 World Police/Fire Games. From 1997 to 2007, Terry was the Chief of Police in Moose Jaw. Police/Mental Health. In 2003, he was invested in the Order of Merit for Police Forces (MOM) by the Governor General. From 2007 to 2008, Terry was the Deputy Minister of Corrections, Public Safety and Policing for the Government of Saskatchewan; from 2008 to 2009 he was the Deputy Minister of Municipal Affairs. He is currently a public safety consultant specializing in police interactions with persons with mental illness as well as the application of de-escalation during police interactions with people in crisis.
Terry has a Master of Human Resource Management as well as a M.A.-Police Studies from the University of Regina. He also has a PhD -Police Studies from the University of Regina. His research focus was the measurement of the organizational performance of police organizations. He has designed and delivered courses on public sector leadership, management and policing for Dalhousie University College of Continuing Education, Athabasca University, the Canadian Police College, the Saskatchewan Police College and the University of Regina as well as an executive strategic policing program for the Barbados Police and the St Lucia Police.