The first half of the book is great, then things go downhill, the book starts lacking focus, and then it focuses on Hooch EXTREME masochism. 
 There is also open-relationship-nearly-cheating in this book. Matt pulls a Dan and starts having sex with many men, at a point he had as many as FOUR fuck buddies! I found it so out of character I don't even know what to think. 
 Then there is Hooch personality switch in his relationship with Matt. I understand Hooch is into extreme pain and humiliation, more pain than humiliation actually. But he never acted like a man who would want to be a... slave?!? But that's how his relationship with Matt evolves. He becomes Matt's slave, his "pet delta". It is disconcerting. Hooch's need for pain is believable but this slave stuff is just out of character. Or is it? 
 Maybe it was a dormant part of Hooch, an extension of his need to be hurt and humiliated? Maybe, but I liked Hooch and Matt's former dynamics too much to like this new development. Now there is nothing left of Hooch tough, alpha character but the memory of it. 
 As I read Special forces, I was one of those who always wondered how Matt and Hooch's relationship would work, considering the fact that Matt was so innocent and vanilla, and Hooch was so damaged and complex and into hardcore masochism. I understand the need to find a way for Matt to be part of Hooch's masochist experience, for the bond of the couple to be strengthened. But I do not believe the best way to achieve that was to turn Hooch into a Matt's slave. 
 This said, I've missed the boys so much that I liked this book anyway. 4 stars for the first half, 2 stars for the second half, I want to give a minus for the end but... So it is 3 stars overall.