Grit and Grace: Respectful Disruption and the Path to  Authentic Leadership

Deputy Chief Treena MacSween began her policing career in 1998 with Peel Regional  Police before joining the Hamilton Police Service in 2001. In April 2024, she was appointed  Deputy Chief of the London Police Service, bringing more than 28 years of experience in  operational, investigative, and administrative leadership. An accomplished Critical Incident  Commander and Public Order Unit Commander, Deputy Chief MacSween has led numerous  largescale operations for major events and critical incidents. She is deeply committed to  building collaborative partnerships that shape effective community safety strategies and is a  steadfast advocate for inclusive workplaces and the wellness of police service members. 

Recognized as a trailblazer in Canadian policing, her promotion to Deputy Chief marked a  historic milestone, making her the highest ranking Black female officer in Canada. Beyond  her operational responsibilities, she serves as Co-Chair of the Canadian Association of  Chiefs of Police Equity, Diversity, and Inclusion Committee and is an active member of the  Ontario Women in Law Enforcement Advisory Council.  

Deputy Chief MacSween is also a proud mother to two daughters, Taylor and Alexis, and  shares a strong commitment to public service with her husband, Mike, a firefighter.