The Man Who Killed Chris Kyle: An American Legend A former Navy SEAL and Iraq War veteran, Chris Kyle is the most lethal sniper in American military history. His autobiography, American Sniper, was a best-seller in the US. On February 2, 2013, Chris Kyle is killed by another veteran, Eddie Ray Routh. The murder takes place on a shooting range in Stephenville, Texas. But that’s only the beginning of their story.