We go behind the scenes of ‘Heavy Rescue: 401’

Highway 401 is the busiest and one of most dangerous roads in North America, but for Ontario Provincial Police Sergeant Kerry Schmidt, it's just another day at the office.Close to half-a-million vehicles travel Ontario’s 400-series highways every day – companies and thousands of commuters depend on these roads. When disaster strikes, the pressure to clear and open roads is intense. Heavy Rescue: 401 is about the men and women facing incredible stakes in a fast-paced, relentless environment. Jobs and lives depend on these highways, and it’s up to heavy rescue teams to keep them open. The show works closely with the Ontario Provincial Police and Sgt. Kerry Schmidt to help execute on-the-spot accident reconstructions, manage pileups and oversee toxic spills.Watch the video clip above for a behind-the-scenes look at the new season.Be sure to check out Season 4 of Discovery’s original Canadian series, Heavy Rescue: 401, Tuesdays at 10 p.m. ET/ 7 p.m. PT on Discovery Channel.