Testimony: Gunshot residue all over Trevor Dooley

Forensic experts explain crime scene details

TAMPA - The gritty details of how a bullet pierces a heart.  The scientific causes of gunshot residue.  The tedious process of analyzing shell casings.  

This is what the real CSI is about, and jurors at the manslaughter trial of a retired school bus driver got an all day taste of what crime scene investigators do at work every day.

Trevor Dooley, 71, is accused of shooting 41-year old Daniel James at a park in Valrico in 2010.  Prosecutors said Dooley was angry that a young skateboarder was riding around on a basketball court, and James intervened, leading to a struggle.  During the fight, Dooley's handgun discharged, shooting James in the heart.

James' eight-year-old daughter witnessed the whole incident.

Dooley's defense attorney maintained that the shooting was an act of self-defense, and that his client is covered under Florida's 'stand your ground' law.  

During testimony, a crime scene expert explained to the jury how both Dooley and James had clear signs of gunshot residue.

"When you've been shot, and you've been shot at close range, your body is engulfed in gun smoke," said Daniel Radcliffe, a crime scene technician who works at the Daytona Beach office for the Florida Department of Law Enforcement.  

State attorneys also called on a forensic toxicologist to explain the details of what happened to the bullet after it was discharged from Dooley's gun.

"It caused two holes in his heart," said Mary Mainlaind, and FDLE crime scene expert.  She was asked how fast a bullet that traveled through someone's heart would lead to cardiac arrest.

"In seconds," Mainland said.

While police investigators were establishing Dooley's connection to the crime scene and that he was the likely shooter of James, prosecutors are expected to call more witnesses to clarify the conflicting stories of exactly what led to the deadly confrontation.

Dooley's defense argued that their client was assaulted by a younger, stronger James and was in fear for his life.

Prosecutors said that Dooley initiated the confrontation, and became angry when James demanded to know why Dooley was flashing his firearm in a park with children and was swearing in front of kids.  

Testimony is expected to continue through Friday.

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