Stephenville, Texas (CNN)Before prosecutors wrapped up their case against him, Eddie Ray Routh's words were in the spotlight Tuesday. A chilling video shown in court showed police placing Routh into a squad car moments after authorities chased him down a Texas highway. Earlier that day in February 2013, authorities say he gunned down two men who were trying to help him at a firing range: Chris Kyle, subject of the hit film "American Sniper," and Kyle's friend, Chad Littlefield. In the video, Routh is breathing heavily and teary-eyed. An officer asks if he's OK. Routh replies: "I'm just so nervous about what's been happening in my life today. I don't know what's been happening. I've been so paranoid schizophrenic all day. I don't know what to even think of the world right now. I don't know if I'm insane or sane."
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Eddie Ray Routh is on trial for the 2013 shooting deaths of Chris Kyle and Chad Littlefield
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A video played in court shows him speaking with police after the shooting
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In an audio recording, Routh says he was annoyed at Kyle and Littlefield
Chris Kyle
Kyle
Chris Kyle
Kyle
The small arsenal of weapons Kyle brought to the range that day was shown to the jury, which included five long rifles and several handguns, including one of @placeholder's rifles labeled "American Sniper."
Chris Kyle
Kyle
Chris Kyle
Kyle
@placeholder's autobiography by the same name spent weeks on best-seller lists.