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Crew members punch in for their first individual challenge, repairing snow fences on Mt. Baldy, the highest peak in Los Angeles.
Phil Keoghan welcomes the 12 new crew members to Camp Pendleton Marine Corps Base in Southern California, where season one winner Marine Veteran Kelly "Murph" Murphy returns to kick off the new season and guide the crew through their first challenge: race to receive cargo dropped from a C-130 plane.
Season two crew member "Freight Train" returns to lead the competitors through their individual challenge of delivering boxes.