Paul MacMillan has extensive experience in public transportation security. He was a police officer for the Massachusetts Bay Transportation Authority (MBTA) Police Department for 31 years, and he was the first officer to rise through the ranks to be Chief; a position he held for seven years. He was Chair of the Transit Security and Policing Peer Advisory Group, an industry group that met regularly with the Transportation Security Administration regarding mass transit security concerns. In addition, he is Chair of the American Public Transportation Association’s Committee of Public Safety. While Chief, he was a continual advocate for providing transit riders the ability to report suspicious or unusual incidents to the transit police through the well-known See Something Say Something campaign.

In addition, he initiated a public awareness campaign about sexual harassment on the MBTA. This was done in partnership with the Boston Area Rape Crisis Center. The initiative was a first for a transit agency and served as a model for other major campaigns across the country. MacMillan received a B.S. in Criminal Justice from Northeastern University, a Graduate Certificate in Dispute Resolution from the University of Massachusetts, Boston and a M.A. Degree in Criminal Justice from Western New England College He is also a graduate of the FBI National Academy and the Senior Management Institute for Police.