Chicago officer critical after collapse serving warrant
In 2010, officer shot the killer of a fellow cop
By Fran Spielman
Now, just three months after celebrating his 40th birthday, he's fighting for his own life.
Chicago Police Sgt. Jason Kaczynski collapsed and suffered an apparent heart attack last week while serving a search warrant at 64th and Normal at a location where an AK-47 was recovered.
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