 When I first started, I knew that I'd get the sniper stuff right, because that's what I did in the SEAL teams. And I knew that if I needed to ask somebody a question about a submarine or an aircraft or something like that, I'd know someone who could put me in touch with the right person to give me that technical detail. But what I didn't anticipate until I started actually writing them was how much the feelings and emotions behind certain events I was involved with downrange would find their way into the pages of the novel.