This brought back a few memories of FTX with these ROKSF in 84? I remember one guy getting kicked!
http://www.reuters.com/article/2012/01/12/us-korea-winter-training-idUSTRE80B0C320120112
Nice, Penn. Reminds me (though I'm not making comparisons) of some cold weather training and ritual purification with cold water done in martial arts. Kangieko is the cold weather training, and mizugori the cold water purification/bathing. Here is a short video, something that those who participated in the FTX in Korea can probably relate to.
http://www.dailyonigiri.com/2011/01/kanchu-misogi-purification-festival-with-ice-cold-water/