Hirotaka Nakasone

George Zimmerman waits for his defense counsel to arrive in Seminole circuit court, on the 11th day of his trial on June 24, 2013 in Sanford, Fla. (credit:  Joe Burbank-Pool/Getty Images)

FBI Audio Expert: 911 Tape ‘Utterly Unreliable’ To Determine Whose Screams Were Heard

An FBI audio expert whose pre-trial testimony helped keep prosecution witnesses from testifying at George Zimmerman’s murder trial has been called to the witness stand.

CBS Tampa–07/01/2013

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