In this exciting book, readers will learn the history of police officers and law enforcement. A look into the past helps readers compare and contrast the way police officers do their jobs today. Through intriguing facts, vivid images, and ive text, readers will be introduced to such things as canine units, evidence and fingerprints that are used to solve crimes, and the D.A.R.E. program. An accessible glossary, table of contents, and index combine to give readers ample opportunities to enjoy and learn from the content.