Hummmmmm…….. USMC Winter Training.

I've been through the school… Burrrrrrrrrrr…. I'll take the sand.

Antarctica preparation?

Not to mention all the new emphasis on underground warfare training.

Marine Corps steps up winter-warfare training as global threat shifts

https://www.marinecorpstimes.com/news/your-marine-corps/2019/03/03/marine-corps-steps-up-winter-warfare-training-as-global-threat-shifts/