Focused deterrence initiatives, including the most famous, Boston's Operation Ceasefire, have been associated with significant reductions in violence in several U.S. cities. Despite early successes, some cities have experienced long-term sustainability issues. Recent work in Cincinnati, Ohio, has focused on institutionalizing focused deterrence in an attempt to achieve sustainability. Despite these efforts, it became apparent that institutionalization was necessary, but insufficient, to achieve long-term success. This study turns to criminological theory to understand why focused deterrence works and how the model can be improved to maximize crime prevention potential. In doing so, the authors draw from the principles of effective intervention from correctional rehabilitation research and describe how these elements have been integrated into the Cincinnati Initiative to Reduce Violence. (Contains 3 notes.)