CNN Anderson Cooper 360 July 2, 2013 05:44:00
I don't know what's going on. >> yes. >> what is your phone number? >> there's gunshots. >> now, the prosecution had some people who were described as audio experts lined up to testify that the voice on the recording was not george zimmerman's but the judge ruled they couldn't take the stand because the techniques they used to analyze that basically wasn't sound. that's why her testimony has become important. i interviewed her a month after he was killed. here's what she said about the 911 call. >> the eyewitnesses have said they believe some of them believe it was your son calling out for hel...