This from Eric Haak:

Here are some pictures from a Still & Box Alarm in Chicago on Saturday morning (2/11). The 15th Battalion was first on scene and reported light smoke showing from a 600 x 200, 4-story, fire-resistive warehouse. Seven minutes later, the 15th reported they had heavy smoke in the interior and asked for the box. It turned out to be an auto. The MVU was brought in to clear the smoke.

Chicago FD Engine 39

Eric Haak photo

heavy smoke pours out of warehouse

Eric Haak photo

probationary Chicago Firefighter at work

Eric Haak photo

Chicago Firefighters at fire scene

Eric Haak photo

Chicago FD Engine 39

Eric Haak photo

Chicago FD Engine 65

Eric Haak photo

Chicago FD lieutenant

Eric Haak photo

Chicago FD MVU 923

Eric Haak photo