Book excerpt: Whether you are a law enforcement officer seeking to improve your edge or a martial artist wanting to expand your knowledge of street-proven techniques, you will find Defensive Tactics: Street-Proven Arrest and Control Techniques is filled with invaluable information to prepare you for even the most difficult scenarios. Highlights include: Joint manipulation that works Leverage control vs. pain control Striking with the hands, feet, forearms, and elbows Safely and quickly crossing the gap Blocking an assailant's strikes Using vulnerable points to gain compliance Head disorientation Safe application of carotid constriction or "sleeper" holds Controlling a suspect on the ground Arresting big guys Fighting concepts to take on patrol Weapon retention in close quarters and on the ground Loren W. Christensen is a retired cop and high-ranking martial artist who survived everything the mean streets threw at him, working patrol, gang enforcement, and dignitary protection. Defensive Tactics goes beyond what is taught in the academy, during an officer's in-service training, and what is allowed by the administration. This book also includes a chapter on proven ways to control a suspect on the ground, written by LAPD officer Mark Mireles, an MMA coach, police academy trainer, and champion wrestler.