Instruct: Classify Amazon reviews into positive or negative sentiment
Query: very disappointing

This is a dreadful book. Besides being a dull read the author seems to be on a big ego trip and spends more time telling us how important he is than explaining interesting events and technical matters. Over and over again, I wanted to learn more about incidents and capabilities that the author mentions. Instead, we get a steady stream of pathetic excuses about not being able to reveal national security matters and partial explanations about things which could have made the book a much more interesting one. It's all about Craven, so if you like books which are about events and details go pick up Blind Man's Bluff instead.