This from Erick Haak:

Chicago had a still and box alarm at 8737 S. Constance this afternoon that resulted in several people being transported to hospitals, including firefighters. 

massive smoke at house fire

Eric Haak photo

massive smoke engulfs Firefighters on ladder

Eric Haak photo

Firefighters mask up for entry

Eric Haak photo

Firefighters at house fire with flames

Eric Haak photo

Firefighters battle fire

Eric Haak photo

Firefighters battle fire

Eric Haak photo