Googled WTSA, in images mostly pics of the Concorde (British Airways), one pic was a link to:
https://www.baaa-acro.com/spotting/f-wtsa
Bureau of Aircraft Accidents Archives.
Thought that sight might be of interest to anons.
Very cold weather gear.
Designs like eyes so the tigers and snow leapards don’t attack from behind.
Extra big and long.
Tartarian long head happy hat?