I heard the sirens, hit the scanner, got the location, ran out on the roof, and got these shots. The heavy smoke didn't last long, so the HFD must have knocked it down in a hurry. I know that Teaneck - including its Box 54 unit - also responded.
Click on 2 and 3 to enlarge.
In #3, you can see a southbound train on the left going slowly through the affected area.