LAPD

civil service department of Los Angeles (California) that is responsible for maintaining law and order and fighting crime

The Los Angeles Police Department (LAPD) is the police department of the City of Los Angeles, California. With over 9,500 officers and 3,000 civilian staff, covering an area of 473 square miles with a population of more than 3.5 million people, it is the fifth largest law enforcement agency in the United States (trailing behind the NYPD, Chicago Police Department, California Department of Corrections, and FBI). The department has been heavily fictionalized in numerous movies and television shows. It has also been involved in a number of controversies, perhaps most notably the infamous Rodney King incident and the subsequent 1992 Los Angeles riots.
See more at Wikipedia.org...

1. Link Access Procedure on the D channel.
2. Los Angeles Police Department.

LINK ACCESS PROCEDURE ON THE D-CHANNEL (PROTOCOL). LAPD