This from Eric Haak:

Here are a few quick images from the 2-11 at 25th and Sacramento this afternoon in Chicago (1/30). Companies made an aggressive interior attack and went defensive as I was walking up. The first image was taken only a couple minutes after the companies evacuated the building and it appeared conditions deteriorated rapidly.

massive flames and smoke from roof of house on fire

Eric Haak photo

Firefighters battle fire in bitter cold conditions

Eric Haak photo

Chicago FD Snorkel and tower ladder at work

Eric Haak photo

Firefighter covered with ice after battling a fire

Eric Haak photo