The East Orange Police Department is a community oriented police agency. The department is committed to the concept of Community Policing.Each of these individuals is experienced in the area of crime scene investigation and evidence collection in the criminal justice system from the standpoints of. Below are recommendations to help you be prepared. Written Test Study Guides. The POST Entry-Level Law Enforcement Test Battery (PELLETB) measures skills that are associated with successful performance as a California peace officer. Use the GovQA online form. OPD is a nationally recognized law enforcement agency that is focused on the safety of our residents, visitors, and businesses. You can publish your book online for free in a few minutes! Instructors share with students the qualities one should possess in order to be successful in the law enforcement field.