LEAVE WITH USABLE TACTICS – NOT JUST THEORY
WE DON’T JUST TEACH — WE CHANGE HOW OFFICERS OPERATE ON THE STREET.
Joel Portillo
I’ve had the privilege of working alongside this detective/sergeant for a while now, and he’s no regular walk-in-the-park police officer. He’s been deeply involved in some of the most gruesome gang investigations, both at the federal and state level, and has truly seen it all. From understanding the structure of prison gangs to navigating neighborhood hybrid gangs, his knowledge runs deep. I’ve learned valuable techniques and methods directly from him, and I’ve seen firsthand how committed he is to sharing that knowledge by teaching other law enforcement officers how to properly document gang members. While others in supervisor roles shy away from proactive work, he doesn’t hesitate—he leads from the front. A hell of a guy all around.
Tyler L
I am blessed to personally know this author as my mentor. He is the one of two officers that I call a true subject matter expert. The passion, drive, love, and knowledge he brings when it comes to Gangs is nothing short of exceptional. I often refer to him as the most qualified and knowledgeable Gang officer in the entire state of Texas and every state surrounding. I’m glad he was able to put his experiences and expertise to paper. It is truly a great read and a great tribute to all of the authors hard work over several years. The dedication on the streets and now on paper is unreal. Highly recommend.
Anonymous
Essential Reading for Every Street Cop
This guide is one of the most practical resources available for understanding and dismantling gang activity. It covers the essentials of field identification, intelligence gathering, case development, and courtroom preparation, while never losing sight of constitutional rights and community trust. The mix of real-world case studies, legal insight, and proactive strategies makes it a must-have for anyone serious about addressing gang crime effectively.
Sanchez
Fantastic read!!! I recommend anyone in law enforcement to read this book, or should I say it should mandatory! Even if you’re not in law enforcement, it is still a book that everyone can learn from and enjoy. I’ve had the honor and the pleasure to work with Calvin Scudder from troop to troop and Scudder as my Sargent. He is the subject matter expert! His knowledge and skillset are unmatched.

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About Sentinel Training Group LLC

At Sentinel Training Group LLC, we believe today’s law enforcement professionals deserve more than just reactive training. They need proactive, battle-tested skills that hold up under real-world pressure—on the street.

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