On my business trip this week, I finished "Killer Elite" by Michael Smith. It's a history of a special ops unit in the US military that focuses on on-the-ground intelligence gathering and what is euphemistically referred to as "battle space preparation" - things like sabotage and prepping landing zones, etc. This book was written by a British reporter, so it has a slightly different perspective on the increased role of special operations units in the US military.
This book was mediocre at best. Started off pretty interesting, but as the story progressed, things got more and more vague. It sounds like he had a good source for the early days of the unit's history, but had to go on declassified and rumored stuff for the more current events. It also had a lot of 'we have an awesome plan, but Brass won't let us do it' stories. These were some cool plans, but it's not very interesting to know what was planned but never executed. It's also very one sided, as it's always the brave heroes of The Activity versus the stuffy and unimaginative upper echelons of military command. Never mind that some of what they planned probably could have been considered war crimes.
Anyway, there's a new edition of this book that was published in 2011 - maybe he developed better sources after the 2007 edition was published.