What is the police department for Station 39?

The correct identification of the police department for Station 39 is Irvine Police. This is because Station 39 is located within the geographical boundaries of the City of Irvine, which has its own municipal police force dedicated to serving the local community. Municipal police departments are typically established to enforce laws and maintain public order within their specific jurisdictions, and in this context, Irvine Police is responsible for law enforcement in that area.

Other police departments mentioned in the options serve different cities or jurisdictions that do not include Station 39. Each of the other departments is responsible for law enforcement in their respective areas—Saddleback College Police operates on and around the college campus, Cypress Police serves the city of Cypress, and La Palma Police serves the city of La Palma. Understanding the jurisdiction of each department helps clarify why Irvine Police is the relevant answer for Station 39, as it directly corresponds with the area the station serves.