Yes, Facing Violence is a good book. Rory Miller is a well known author and a former prison guard. He knows first hand about the subject. Also another one you might like which I own is called Krav Maga Defenses Against Armed Attacks. Its by the founder of Krav Maga, Imi Litchenfeld. Another one, even though it has techniques in it, try The Complete Krav Maga by Darren Levine. Both good books. You can also look some up on Google Play. Just type in Krav Maga under books search.