Law enforcement expert Dennis Root testifies during George Zimmerman’s trial in Seminole circuit court in Sanford, Fla. Wednesday, July 10, 2013.
Law enforcement expert Dennis Root testifies during George Zimmerman's trial in Seminole circuit court in Sanford, Fla. Wednesday, July 10, 2013. Zimmerman has been charged with second-degree murder for the 2012 shooting death of Trayvon Martin. ((AP Photo/Orlando Sentinel, Gary W. Green, Pool))