CNN CNN Newsroom February 10, 2014 15:00:00
There a difference in a sound between a 38-caliber bullet and a 9-millimeter bullet? > >> i would believe you would probably notice a difference in sound. >> there are a ton of different variables, is that correct? >> that's correct. >> good morning, everybody. we just reached the top of have the hour. it's 10:00 eastern. we are covering a trial from jacksonville, florida. this is the trial of michael dunn, accused of killing a teenager named jordan davis over loud music coming from the teenager's car at a gas station. michael dunn is using florida's stand your ground case as the defense. on t...