This book was developed by the Gang Intelligence Strategy Committee (GISC), a committee under the U.S. Department of Justice's Global Justice Information Sharing Initiative's Intelligence Working Group. The GISC-composed of federal, state, local, and tribal law enforcement; justice; and corrections representatives-is tasked with improving gang-related information sharing. This book provides guidance to agencies seeking to establish and operate a gang task force or gang intelligence unit within their jurisdiction or those agencies that participate in a gang task force.