Brad Jacobs has made a career out of kill or be killed. Some call him coldblooded. He'd argue that emotional sensitivity is no match for an AK47. For a retired Marine and bounty hunter anxiety is a foreign word. His world is a dangerous ugly place, and giving in to nerves is a fast way to get killed
Die Trying (Jack Reacher, Book 2) by Lee Child
Option to Kill (The Nathan McBride Series Book 3) by Andrew Peterson
The Apostle: A Thriller (Scot Harvath Book 8) by Brad Thor