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Kyle tangles with a wreck that will prove if he's got what it takes to lead the team; Sonny heads to the scene of a violent jackknife.
Gary's team fights to upright a battered trailer; a rookie takes his first shot as lead operator on the rotator.
A whiteout pile-up scatters heavy I-beams across the highway, testing James and his crew; Kevin must lift a 20,000-pound chunk of steel off the road.
Government agencies work together to keep traffic flowing on Ontario's mega-highways when ice, snow and big-rig accidents threaten to close them down.