Quiz: what is it?

[izard]

We have snowstorms here. Some trains are canceled, snow plowers are operating round the clock.

Just guess, what this guy operating a complex device is doing?

Response is under cut, in form of a pic with a person doing the same with less sophisticated device.

I've been to Finland today. A lot of flights were canceled, and those that were not were defrosted.
That's how it works:

There are 2 liquids: orange and green. Both look toxic.

Same procedure in Finland is done by a guy even without protective gear.