From Tim Olk:

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters vent roof of house on fire

Tim Olk photo

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters battle house fire in Chicago

Tim Olk photo

Firefighters after a fire

Tim Olk photo