Published: Oct 24, 2011 5:31 PM EDT

FORT LAUDERDALE, Fla. (AP) - Lawyers for a 68-year-old man accused of killing a federal agent during a road-rage incident are preparing to use the state's 'Stand Your Ground' law during an immunity hearing. They contend their client used deadly force in self-defense.
    
The South Florida Sun Sentinel reports an appeals court last month ordered the Jan. 17 hearing for James Patrick Wonder.
    
Wonder is accused of manslaughter in the 2008 shooting of U.S. Customs and Border Protection Agent Donald Pettit. Authorities say they were involved in a road-rage incident before the off-duty agent followed Wonder into a post office parking lot and yelled at him. That's when Wonder opened fire.
    
A grand jury rejected a first-degree murder charge and indicted him on a manslaughter charge. He faces up to 15 years.

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