I will second the "bear suit"...I just couldn't get the bibs in the right size from ebay.
I couldn't help but laugh every time I had all that shit on. We would run drills where we had to fall back to the secondary perimeter. Looked like a damn gingerbread man trying to run in snow.
On one exercise the opfor was the ROK marines. They made it through the perimeter and we were condensing to our secondary perimeter I came around the corner of the radio tower that we were guarding and there stood one of the big sons of bitches. I went for him and he spun around and kicked me square in the chest. You could see where I slid four feet on my back in the snow. But between that big teddy bear suit ,my flack vest, and my field jacket with liner it didn't even hurt. I was dead however because I couldn't get off my damn back. I was rolling around laughing like some fat chick stuck in the snow.
There was this one other time where a buddy was out checking the perimeter on top of this mountain. He took a wrong step and ended up tumbling off of this sucker. No real drop off just steep as hell. He looked like a starfish with white boots on doing cartwheels.