MRF-E 20.1 Ice-Breaking B-Roll...Video by Cpl. Menelik Collins

This shit does not look pleasant.  To be frank this shit looks like a MASSIVE shock to the system.

Stupid question but I just don't know.

Is this a real danger when working in the arctic?  You just can't watch where you step (like I said I don't know) or is this one of those "character" building rights of passage that the Royal Marines pushed our way (they seem to be real big on this)?