This from Dennis McGuire, Jr.

Took in this Still and Box at around 6am this Saturday. Engine Co. 115 was the 1st engine on scene and found heavy smoke inside of an unoccupied, one-sty, 150×100 grocery store. Upon entry the fire was found to be in the loading dock area with no structural involvement.
Dennis
Chicago fire trucks at fire scene

Dennis McGuire, Jr. photo

Chicago fire trucks at fire scene

Dennis McGuire, Jr. photo

CFD battalion chief at fire scene

Dennis McGuire, Jr. photo

Chicago FD Engine 120

Dennis McGuire, Jr. photo