Almost finished Massad Ayoob's Combat Hangunnery. What an excellent book. He really is an authority in this subject manner. Apparently many in the CCW world is well liked. I am looking forward to purchasing a couple of other books by him: The Gun Digest Book of Concealed Carry as well as In the Gravest Extremes. The latter delves into the aftermath on the use of deadly force. Being a seasoned law enforcement professional he presents issues and concepts in a no nonsense manner.
I highly recommend these books.