Ex-Marine Guilty in 'American Sniper' Murder Trial Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email An undated photo of Chris Kyle, the U.S. Navy Seal who was murdered by ex-Marine Eddie Ray Routh. His story became the subject of the Oscar-nominated film "American Sniper." ( Chris Kyle Memorial Page / Facebook ) Produced by PRI and WNYC