CNNW Anderson Cooper 360 April 5, 2012
and whether george zimmerman fired in self-defense. in a moment, a new version of that 911 audiotape that some believe contains zimmerman uttering a racial slur. the fbi now analyzing it. we did our own enhancements early but have now used more sophisticated methods to uncover the truth. also, zimmerman's two attorneys are speaking out about why neither sat down and looked their client in the eye. >> if there's an investigation on going in this case, there are cases where i want to hear my client's version, look him in the eye and see if i believe him or not. i believe the sanford ...