While serving in the police he earned a bachelor of arts degree in criminology from Roger Williams University and later a master 's degree in criminal justice from Anna Maria College .
In August 2004 , having served for 24 years , Doherty retired with the rank of major .
While serving in the police Doherty earned a bachelor of arts degree in criminology from Roger Williams University and later a master 's degree in criminal justice from Anna Maria College .
In August 2004 , having served for 24 years , Doherty retired with the rank of major .