CHICAGO (CBS) — A retired Chicago Fire Department lieutenant is back to his daily routine — having coffee at a local fire station most mornings. Now, however, it’s with plenty of gratitude.

75-year-old Bob Zolna had a diabetic emergency in February. It was firefighters and paramedics from the Mount Greenwood Fire Station, along with neighbors who are paramedics, who saved his life.

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Zolna was initially given an injection intended to raise his blood sugar. But when he went into cardiac arrest, a defibrillator was used on him several times.

Once in the hospital, Zolna was given a combination of a pacemaker and defibrillator.

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The retired lieutenant said his friends did a “helluva a job.”