> Then he did something once he pulled off with a shovel at the door where the zamboni came on and off the ice.

Just cleaning up the extra ice/water/slush that the truck leaves behind.

I do appreciate you looking out for the worker, but 25 minutes in 25 degrees with 25 mph winds is plenty safe. Even at negative two or whatever it's going to be, it's not that dangerous to be out if you have reasonable protection.

I go winter hiking in the Adirondacks, and our early morning starts are generally below 0 (lowest so far is -17), and it's really not too bad. Still shedding layers after walking for a bit.