confrontation and the claim that the officer was targeted simply because he wore a uniform. cnn's ed lavandera is covering the story, joining us live from houston. have we learned anything, ed? >> reporter: we're really waiting to find out more details as to exactly what the motivation was here. i spoke with one of the attorneys representing shannon miles. they say one of the first things they will do is work up a psychological exam on their client. that hasn't been done yet. many people got a close look at him today trying to figure out if he is indeed the killer what motivated him to do that. it was so quiet when shannon miles walked into the houston courtroom, you could only hear the sound of the shackles around his ankles and waist. a show of force looking on as several dozen sheriff's deputies stared down the man accused of killing their fellow officer. >> he unloaded the entire weapon into deputy goforth. >> reporter: prosecutors gave the most detailed account yet of