working hard. rough and tough more your style. as evidenced by this brawl, the u.s. and canadian women's hockey teams do not like each other. canada is a three-time defending gold medalist. the americans have the only other gold in olympic women's hockey won during the inaugural year in 1998. don't expect the tension to thaw any time soon. on the men's side, nhl rivals become teammates as the u.s. hockey team looks to rebound from the heartbacking loss to canada in the gold medal game in vancouver. >> you can have battles on the ice in your regular season. when a team needs to be put together for the olympics in the united states, you find yourself sitting next to a guy like ryan kesler, who you hate on the ice playing against him but when you play with imhad, yhim, you love with him. >> reporter: of course, there are the slopes. teenage skier, micayla shiffrin