Chris Kyle, a 38-year-old former Navy SEAL and author of the bestselling autobiography American Sniper, was killed on February 2, 2013, at a shooting range near Chalk Mountain, Texas. He and his friend Chad Littlefield, 35, had taken Eddie Ray Routh, 25 and a former Marine, to the Rough Creek Ranch-Lodge-Resort shooting range after Routh’s mother asked Kyle to help her son, who was struggling with post-traumatic stress.

Kyle was shot six times, including a fatal bullet to the back that pierced his aorta and a shot to the jaw that caused severe spinal cord injury. Routh was apprehended after a brief pursuit, later charged with their murders, and convicted. The case drew national attention because of Kyle’s prominence and the circumstances involving veterans and mental illness.