While this book was written primarily for those in law enforcement, honestly most of the principles would benefit from those articulated herein. There are some areas of sacramental theology I would disagree with and occasionally on Biblical exegesis, but again, overall I would be in agreement.
I would recommend this book to anyone who has a family member in a high stress profession (not only law enforcement, but other first responders, military, et al). I would also suggest this is a good book for chaplains of these professions to read as well. By having some of this in your mind, you'll be a more effective minister.