Riverside Public Safety
Police Biographies

Chief Gregory Mills
Gregory Mills became the Director of Public Safety in March, 2005 following his retirement after 29 years with the Kansas City, Missouri Police Department.

In addition to extensive experience in policing, Director Mills' formal education includes a Master's Degree in Public Affairs, graduation from the F.B.I National Academy, and graduation from Harvard University's Program for Senior Level Executives in State and Local Government.

Captain Michael Costanzo
Michael Costanzo has been in public safety since 1989, having received academy training in both police and fire service. Since coming to the Riverside Department of Public Safety in 1995, Captain Costanzo has had a variety of assignments to include uniformed patrol and being the first School Resource Officer for Park Hill South High School. Captain Costanzo has commanded both the Police and Fire Divisions for Riverside.

Captain Gary McMullin
Captain Gary McMullin began his career with the Riverside Department of Public Safety on July 7, 1994 as a reserve Public Safety Officer while continuing his service with the Platte County Sheriff's Department. In July of 1995 McMullin accepted a full-time position with Riverside, MO as a Public Safety Officer. McMullin was later promoted to the rank of Sergeant in 2000, and promoted to the rank of Captain in 2005. He has received sixteen (16) awards and commendations throughout his thirteen-year career and has participated in four (4) major career projects within the Public Safety Department. Captain McMullin attended the Police and Fire Academy through the University of Missouri and has attended over 1200 hours of additional police and fire training since his graduation.