n amination of the police officer shooting an unarmed person than this prosecutor's office. and it's just troubling to this smily. >> reporter: crime scene photos showed evidence of the struggle inside the officer's s.u.v. and outside on the street. photos also show wilson's injured face. when you saw the pictures, you expected to see worse? >> i expected to see worse, based on what they told us at the beginning-- a blow-out, orbital fracture to his eye socket. >> reporter: and what you saw instead was? >> a picture with a blush on his cheek. >> reporter: wilson also described the two men's struggle over his gun. he testified, "it goes off. when it went off it shot through my door panel, and my window was down and glass flew out my door panel." one shot grazed brown's right thumb. he ran. wilson gave chase and fired at town. he says brown suddenly turned around. wilson: "at this point i start m ck-pedaling, and again i tell him 'get on the ground, get on