According to the Chicago Sun-times, there has been significant job growth in food storage, especially cold/frozen storage. This is due to changing practices using online shopping, grocery deliveries, and fewer restaurant meals. There is high pressure to deliver perishable products closer to the customer and to better withstand demand variations.
It’s a hot market in Chicago and other cities for cold storage facilities. This is not new to Chicago, which had Fulton Market Cold Storage, new facilities in Northlake, and several in Chicago. This is a huge development for real estate developers.
Locations near airports are popular, but also sites such as the stockyard area and produce markets on the south side.  There is already a distribution center in Pullman for Whole Foods. Amazon is scouting properties for fresh food deliveries.