Kyle was honorably discharged from the U.S. Navy in 2009 and wrote a bestselling autobiography, American Sniper, which was published in January 2012. On February 2, 2013, Kyle was shot and killed at a shooting range near Chalk Mountain, Texas, along with friend Chad Littlefield. The man accused of killing them is awaiting trial for murder. A film adaptation of Kyle's autobiography, directed by Clint Eastwood, was released in December 2014.