By Mike Machi

Ammunition manufacturers are in the process of removing lead from their bullets — a new development that experts say could threaten law enforcement's ability to arrest and convict criminals.

On television, crime scene investigators make science seem so simple. In reality, their job is very difficult. Their conclusions are based on complex calculations.

"This is a potential game changer," predicts Michael Knox, a seasoned crime scene investigator. Knox is based in Jacksonville, but consults on cases nationwide, including the Trayvon Martin killing in Sanford.

Knox said he believes the absence of "lead" from bullets and "lead residue" from crime scenes will threaten public safety.

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Source: Click Orlando