To assure the utmost care in the collection and preservation of evidence at crime scenes, the Orland Park Police Department utilizes Evidence Technicians (ET) and Field ET.

An ET is a police officer, who is generally an investigator, that is trained in the accepted methods of evidence collection, preservation, and processing. Their primary responsibility is to process a crime scene.

A Field ET is an experienced police officer who is trained in acceptable methods of evidence collection, preservation, and processing, but, has primary responsibilities as a patrol officer. The use of Field ET allows the rapid response of an ET to any crime scene.