CNN CNN Newsroom July 3, 2013 17:41:00
He shot trayvon martin. i want to bring in george howell outside the courthouse. feder first of all, let's talk about the firearm analyst. explained how close these two were because o of what she learned from the residue of the gun. can you explain why that was significant. >> reporter: she explained the process. he did a distance examination where she took some of the live rounds that were in that gun that she was testing. i think there were seven. took some of those and fired shots into samples of clothing. samples of clothing from trayvon martin's sweater, hoodie and trying to determine the...