Book excerpt: This manual is a comprehensive guide for writing investigative police reports. In addition to the information on how to properly write a police report, it offers specific guidance for using the San Diego County Wide narrative, and it offers detailed explanation, examples and instructions for the specific forms used in the Automated Regional Justice Information System (ARJIS).Sergeant Mensior, a law enforcement veteran for over 30 years, has extensive experience in not only investigating a wide range of crimes but also in teaching officers how to conduct investigations and then properly document their investigations. A college professor since 1996, Sgt. Mensior has traveled nationwide, training law enforcement officers in a wide variety of subjects.