Chris Kyle, the former U.S. Navy SEAL and author of American Sniper , was killed by Eddie Ray Routh on February 2, 2013. Routh, a 25-year-old former Marine Corps veteran suffering from post-traumatic stress disorder (PTSD) and diagnosed with schizophrenia, shot Kyle and his friend Chad Littlefield at a shooting range near Chalk Mountain, Texas. Kyle and Littlefield had taken Routh to the range in an effort to help him with his mental health issues. Routh opened fire on them with handguns belonging to Kyle, killing both men

. Routh was arrested after a brief police chase and was later found guilty of the murders. He was sentenced to life in prison without the possibility of parole