Of course! And who better to point that out than Bob Lee Swagger, aka Bob the Nailer, one of the best snipers of all time. If you're familiar with his earlier exploits, you know that he's not just a shooter. He's practically a genius when it comes to figuring out sniper-related crimes.
He's practically a superman, too. Waterboard him six or seven times and expect him to tell you anything? You poor fool.
I enjoyed I, Sniper, and I found it a cut above Hunter's last book. But I thought that Hunter got a bit too cute with his Marty Robbins "Big Iron" and Texas Red stuff. It just didn't work for me, and the ending was, again, way too cute. For fans of Bob the Nailer, though, it's a must-read. For those who haven't made Bob's acquaintance yet, I suggest going back to Point of Impact and reading that one.