Some of the good things the good 'ol Sgt. Major wrote are not quite accurate.
Don't forget that he is trying to sell his book, and now he sells himself as a consultant to news agencies. He is especially popular on the "newsmags" Extra and the like. He is not "pro-gun" by any stretch, and only believes in firearms training/ownership by LEO and Military. He has burned a lot of bridges, and made some enemies of once good friends because he decided to use them to further his own personal agenda.
He did not get clearance to write the book. When asked why, he stated that the Military is too inflexible (in his opinion) on certain things, and he felt that he was justified divulging his knowledge without prior approval.
To answer any question, yes I did read the book. However, I refused to buy it as I didn't want a penny to go into his pocket.