By Fran Spielman
CHICAGO — He earned the Chicago Police Department's highest award for bravery after gunning down the killer of fellow Chicago Police Officer Thor Soderberg — without wearing a bulletproof vest.
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.
Chicago officer critical after collapse serving warrant