This from Eric Haak:

I took this in around 5:00am Thursday morning (1/5). The first company reported it to be a pallet yard at 48th and Morgan. From the street it looked more like a pile of junk that did catch a few stacks of pallets. Engine 50 had a position inside the yard that was not visible from the street.

Chicago FD Engine 49

Eric Haak photo

truck yard fire at night

Eric Haak photo

firefighters in junk yard at night

Eric Haak photo