Sub-Zero was an Instructor at the Army Northern Warfare Training Center in Fort Greely, Alaska and a consultant to the Cold Regions Test Center at the same facility. He beat all records on cold weather endurance solely on MEANESS! Before he was tapped to join G.I. Joe, he used his ‘deep-freeze’ combat tactics in Europe’s Operation Chill so that troops would be well prepared if any winter confrontation should erupt.
