The past 20 years have seen a transformation in the provision of probation and parole services as science has been applied to our understanding of a range of criminological factors that influence behavior and increase a person’s risk of being involved in criminal behavior or of recidivating after incarceration. Many risk factors have been determined and studied, with some viewed as static and unable to be changed (e.g., early traumatic life experiences, past criminal involvement) and others viewed as dynamic or subject to change (e.g., job readiness, criminal thinking, victim access). As a former Assistant Deputy Chief U.S. Probation Officer for the District of Massachusetts, my goal was always to strengthen prosocial behaviors and skills to lower the risk of incarceration or postincarceration recidivism. The job we do, and the decisions we make, are strengthened by science and research. For instance, scientifically validated risk scales and evidence-based interventions, as discussed by Serin et al.