Police officers risk their lives every day to protect and serve our homes, families and communities. These men and women are our eyes. Our ears. Our protectors. Those who wear a badge, doing their best to help people. Serve. These cops serve their communities. They serve their country. They're in the business of saving lives— even at the risk of their own. Defend. These patrol officers and K9 handlers, sheriffs and detectives, reveal what it's really like to wear the uniform, to carry the weight of the responsibility they've been given. This is a calling. This is the job. Walk the Blue Line is the book that the law-enforcement community has been waiting for.