This from Tim Olk:

Bridge Cooling Due To Extreme Heat Michigan And Wacker

Chicago FD Engine 2 Fire Boat

Tim Olk photo

Chicago FD Engine 2 Fire Boat

Tim Olk photo

Chicago FD Engine 2 Fire Boat

Tim Olk photo

Chicago Firefighters cool bridge on hot day

Tim Olk photo

Chicago Firefighters cool bridge on hot day

Tim Olk photo

Michigan Avenue bridge in Chicago

Tim Olk photo

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