Image: Witness Nakasone testifies in the second-degree murder trial of George Zimmerman in Seminole circuit court in Sanford
Pool / Reuters

NBC News Channel   |  July 01, 2013

FBI audio expert takes stand at Zimmerman trial

Dr. Hirotaka Nakasone, a voice recognition scientist with the FBI, takes the stand as testimony in the George Zimmerman trial moves into its second week.

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