Massad Ayoob owns and operates Massad Ayoob Group (massadayoobgroup.com), teaching thousands of students annually about practical shooting tactics and the many aspects of self-defense law. He has published thousands of articles in gun magazines, martial arts publications, and law enforcement journals, and authored more than a dozen books on firearms, self-defense, and related topics, including best sellers such as Deadly Force and Combat Shooting with Massad Ayoob.