The contribution of August Vollmer and O.W. Wilson cannot be ignored in the reform and evolution of law enforcement. Vollmer was the police chief who was very much progressive. With his innovative mind he has changed the law enforcement for the sake of the people. The entire police department was developed with the help of technology, education, and training with the guidance of Vollmer (Novak et al. 2017). On the other hand, it was Wilson, who pioneered the need of using the advanced trainings for the police officers. In this way, criminal justice has started as an academic field. Both of these persons involved administrative techniques and modern management to the police department.