Bill Wright and his son need to become a tight team on a remote job; a city-based crew heads north to fight a demolished tractor-trailer in rugged terrain; Kevin feels the pressure when a load of steel smashes onto the highway right before rush hour.

Investigators race to find crucial evidence in the wake of a devastating crash; an unexpected malfunction puts Collin directly in the line of fire.

Todd tests his skill against a truck crashed up a steep slope; Bill Wright must learn to trust his son as they struggle against a swampy wreck; a frustrating job rattles Duncan while a key member of his team fights to return from a serious injury.

An overpass jackknife pushes Bill Wright into quick action; Collin's first heavy job after a close call forces him to put his father's new safety plan to the test.

An Eastern Ontario crew works to untangle a truck from a thick stand of trees; Mike Ross and Austin battle a trailer ready to burst; Andrew's crew faces a tragic job after losing a key member of their team.

A tanker full of wine rolls and spills on the 401; Mike McPhee takes his first step back toward the highway after a potentially career-ending accident; Eric and the crew work to save an excavator from the edge of Lake Erie.

A storm slams into Toronto and Kerry takes cleanup into his own hands; Bill Wright is forced to pull off an impossible move; when a truck smashes through an overturned semi, John Campbell has to improvise with the tools at hand.

Duncan takes on a difficult wreck as Mike McPhee returns from the injured list; a load of liquid asphalt threatens to spread.

Bill Wright must perform a complicated rescue; Kevin leaves his home base to work a recovery in the big city; Gary and Collin fight a dumped load of giant boulders; Mitch reveals a tough personal struggle.

Duncan helps an industry veteran take on a heavy rollover in a marathon job that delivers.

Heavy squalls launch a surprise attack on the Ross crew; Sonny handles huge rolls of paper that threaten to tear through a trailer; Eric faces a major decision about how much more heavy recovery his battered body can stand.

When winter mounts a comeback, John Allen spends a night battling a load of spilled scrap metal; Collin faces a tight deadline on a double recovery; Bill Wright makes a call, leading to a farewell for Mitch.

A double tanker loaded with gasoline smashes into a house; Duncan Cooper puts his new 50-ton rotator to the test; Gary and Collin bring their rookie crew to a bad collision blocking the road to the border.

Sgt. Kerry Schmidt fights to get stuck commuters moving; Austin Hutchinson is forced to battle a nasty wreck all on his own; Abrams' John Allen tackles a snowplow blocking a vital ramp.

Sgt. Kerry Schmidt coordinates heavy tows and Sonny Subra must clear a ramp littered with semis; Herb's Towing takes on a B-train that slid right off the highway; Eric Goddard brings a brand-new heavy wrecker to recover a heavy trailer.

An armored truck rolls over on the 401; Kim Reid's crew deals with a toppled trailer in a risky spot; Ross Services handles a tanker full of gasoline; Gary and Collin have conflicting ideas about getting a badly compromised trailer back to the road.

Chad Grenier deals with a spun-out tractor; Bill Wright brings his new rotator to a dangerous corner of the 401; the Herb's Towing crew faces a major challenge when a semi barrels across both sides of the highway.

A heavy crew must remove a load of industrial glass panels from a buckled trailer; a double wreck pushes crews into a tense race; Gary gives a rookie operator the chance to learn the ropes at a difficult scene.

Eric and Senior work to coax a semi back on the road.

When a transport rolls on a dangerous curve, John Campbell needs to master his new rotator in a hurry; Duncan Cooper and crew take on a full load of medical supplies dumped on the side of the highway.

Sonny pushes his small wrecker to its limit; a load of buttermilk spurs a messy cleanup; the newest member of Andrew's crew gets to prove her worth against a badly mangled wreck.

Herb takes a break from retirement to help the crew wrangle a huge and heavy job; an OPP constable makes a very unusual traffic stop; the Preferred team confronts a challenge that even Gary has never seen before.

The Preferred crew must split up to clear two wrecks; Gary desperately wants to have Collin back at his side; Mitch Wright returns home just in time to pick up a shovel and lead a frustrating recovery against a dump truck filled with manure.

Sgt. Kerry Schmidt works with Abram's crew to clear the highway; Duncan teams with John Campbell on a semi mired deep in mud; Ross' Mike and Austin attempt to recover a trailer carrying an unusual load; James and Fabiana respond to a fire.

Sonny needs to clear a spun-out semi in time to make a family commitment; after a transport veers off the highway, Eric faces a hard truth about his career; Andrew's crew must overcome intense resistance from a truck frozen deep in the ditch.

Rookie Sonny faces a 40-car pile-up that turns a major highway into a war zone;a fierce storm triggers a triple-semi crash; a father-son team race to clear the road as weather blasts in.

A semi-truck crash shuts down a crucial border route; rookie heavy rescue driver Sonny helps a trucker stuck on a dangerous stretch of highway; a tanker wreck causes commuter chaos in Toronto.

A courier truck rolls over; a vicious storm puts Mark in the middle of a crash zone; the crew dives for cover during an icy airbag job.

James and Bubba recover a semi smashed into a building; Kevin faces problems with a tractor-trailer crashed in deep mud.

Gary's team fights to upright a battered trailer; a rookie takes his first shot as lead operator on the rotator.

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.

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.

During a spring storm, Steve cleans up a fuel spill blocking the 400, while Sonny struggles to keep the alternate route moving; John Allen recovers a loaded semi that went for a wild airborne ride.

Members of the Highway Thru Hell crew join the 401 crew to weigh in on the unique challenges of recovery operations in Ontario and B.C. and compare the biggest wrecks and toughest jobs over the past winter.

Sonny and the team from Steve's Towing fight to remove the wreckage of a dump truck embedded in an overpass on the 401; James Ireland faces a trailer threatening to cave in on his crew.

A freak storm unleashes a 100-car pileup east of Toronto, pushing Steve and Sonny to lead the recovery charge; Kevin fights a tough wreck after a trucker smashes into an orchard.

A massive multiple-semi crash in a tunnel forces the Coxon crew to clear a big mess in a tight space; Mark Haslett heads to the rescue when a woman is trapped on a dangerous stretch of the highway in Toronto.

When a violent windstorm flips a tractor-trailer on an exposed bridge, Kevin works under the most difficult and dangerous conditions of his career; James takes on a wind-battered wreck of his own.

A tragic collision between two semis sends Bear and the crew from Ross into the fray; Nate and Andrew improvise after a load of lumber rolls on the 401, backing up traffic all the way to Quebec.

Sonny hunts for a shortcut across town after a runaway van smashes through a wall and into the path of a full-speed truck; the crew from Herb's hurries to save a load of pharmaceuticals before it freezes.

Freezing rain scatters Gary's team, forcing him to work solo to open the continent's busiest border crossing; in Windsor, Brad, Eric and crew fear a tragedy when they untangle a sedan badly crushed by a semi.

A storm sweeps across the province, sending heavy rescue crews scrambling; in Hamilton, Kevin fights to clear a wreck in time for the plows to get through.

The pressure is on for Steve when a flipped truck blocks access to the airport; Coxon fights a wreck with a toxic payload; a wild rollover rips a cab off its chassis and leaves a trail of destruction for the Ross crew.

A heavy wreck and a frustrating recovery threaten to overwhelm Kevin; after a big change in his career, Sonny struggles to make a mark when a heavy load flips in the middle of the city.

Sonny deals with a jackknife during the first winter storm; John deals with a messy wreck under an overpass.

Kevin orchestrates a team of heavy operators during a highway cleanup job; Gary's crew is sent on a marathon recovery.

The Sarnia crew battles exhaustion and frustration on a wreck that refuses to stop fighting; a badly-timed breakdown puts Eric on edge; Sonny works to free a fleet of plows trapped on the highway.

Thick fog descends on the highway, turning a seemingly simple recovery into one of the most dangerous jobs of Gary's career; a mangled trailer forces the Ross crew to take a chance on a very unconventional maneuver.

The crew scrambles to keep the roads open during a whiteout, but drivers wind up stranded on the 402; John battles high winds during a job high above the 401.

Herb's Towing turns a wreck on its head with some unexpected assistance; with traffic backing up for 50 kilometers, a fuel leak complicates an already stressful recovery for Steve and the crew.

The Ross crew responds to an overturned wreck; the road to the boarder is shut down; John faces a steep ravine for a recovery.

The crew from Herb's faces a night of non-stop recoveries when a blizzard hits; a veteran fights the toughest battle of his career at a multi-semi pileup.

The crew responds to a wreck scene that stretches over half a kilometre; Sonny takes on the role of mentor; Onne and the crew work to save a trailer.

Gary and the team tackle a tanker wreck; Steve's crew fights to get a tall tractor off the highway.

The Ross crew works the biggest, most complex job of the season after a bridge collapses in a river; a young rotator operator gets in over his head.

The world's largest custom-built livestock carrier, the Becrux can carry nearly 20,000 heads of cattle or 60,000 sheep.

The Emma Maersk is the world's largest ship, capable of carrying cargo in more than 12,000 containers.

The newest, and largest, vehicle carrier has 13 decks the size of 11 football fields.

Canadian Coast Guard icebreaker Henry Larsen specializes in search and rescue missions.

The largest ship to sail the Great Lakes, the Paul R. Tregurtha is designed to carry as much cargo as possible.

The Tyco Resolute is needed for burying high-tech fiber optic cables across oceans, using an immense underwater plow.

An in-depth look inside the Queen Mary 2; meet some of the people working on the ship; the bridge, the galley, lower decks and engine rooms.

The Jumbo Fairplayer represents the biggest and strongest mega ships built to transport super-sized equipment.

A new breed of warship, the HDMS Absalon patrols the Gulf of Aden and other dangerous shipping routes.

The Akamalik is the star of Royal Greenland's shrimp trawling fleet and plays a critical role in the country's economy.

The MV Resolution, a self-elevating support system ship, is designed to install gigantic wind turbines on the bottom of the sea.

The world's largest nuclear-powered aircraft carrier, the U.S.S. Nimitz has a crew of more than 3,000 as well as an air wing with more than 2,000 personnel.

See how the world's biggest mining ship hunts for diamonds and then processes them amid tight security.

The maiden voyage of the Oasis of the Seas, the largest, most revolutionary cruise ship in the world.

The USS Kentucky, an Ohio-Class ballistic nuclear-powered submarine, is virtually undetectable.

The Cristobal Colon is to dredge sand from the sea floor for a super port in Cuxhaven, Germany.

Africa Mercy, the largest non-governmental hospital ship, delivers medical care to regions with polluted water or no power.

Soltiaire lays nearly 2,000 miles of oil and gas on the ocean floor per year.

Marine research vessel G.O. Sars searches for new life forms north of the Arctic Circle.

Saturation dive support ship, DSV Skandi Arctic, is the biggest and newest in the world, serving as a mother ship for aquanauts.

Join the USCOG Bertholf on patrol off the coast of Colombia, looking for drugs, weapons and other illegal activities.

The ships mission to lift, transfer and deliver two of the largest autoclaves ever built to a gold mine in the Dominican Republic.

The USNS Robert E. Peary is a T-AKE 5 supply ship deployed in the Gulf of Aden.

The Stena Britannica is a combination of car carrier, passenger ferry, cargo transport and cruise ship, operating between England and Holland.

The crew of the Canadian Coast Guard Ship Amundsen, a research icebreaker battling the Arctic extremes, seeks to understand how global warming will change Arctic life.

Le Boreal is built to take on the demanding waters of the Southern Ocean.

The North Star is a roll-on/roll-off ship that delivers goods from Seattle to Anchorage within 72 hours.

The Norwegian Epic is a billion-dollar showboat with more than 20 bars and restaurants and pool decks that transform into nightclubs.

The U.S. Navy's newest ship, a guided missile destroyer, goes through testing with its crew in preparation for deployment.

Umiak I is the world's most powerful ice-breaking carrier, hauling mining equipment from Quebec City to Labrador and returning with nickel concentrate.

The FPSO Maersk Peregrino is the world's biggest oil production ship and is permanently hooked up at the Peregrino oil field.

The recovery ship USNS Grasp has recovered downed aircraft, towed sunken vessels and cleared harbor debris.

The world's top cruise ship, the Crystal Serenity visits Sydney harbor, the port of Melbourne, Bali, a large-scale furniture load in Semarang, Indonesia and the port of Singapore.

The USS New York is a floating tribute to those who died Sept. 11, 2001, with 7.5 tons of steel salvaged from the wreckage of the Twin Towers forming her bow stem.

The Stornes has been built specifically to deploy rocks through a "fallpipe" for structures installed under the ocean.

The Northern Eagle is capable of catching and packaging fish, bringing 1,500 tons of frozen, packaged product back to port.

The newly-built Neptune is designed to install wind turbines and Belgium's first offshore wind farm is her first assignment.

Follow the building of the Norwegian Breakaway at Germany's Meyer-Werft shipyard; it is the largest ship they've ever built and they have only 18 months to finish it.

The Norwegian Breakaway cruise ship sets sail on her first voyage, and her captain faces a tough decision when a North Atlantic tempest forms.

The Wind Surf, a sleek, five-masted luxury sailing yacht, is large enough to pamper and yet small enough to tuck into tiny harbors and hidden coves.

The Avataq carries everything from food and furniture to mining equipment and explosives to Quebec's inaccessible northern regions.

Stemat Spirit is built to work on land, approaching shore during high tide, settling on the sand as the tide recedes and sailing out to sea, laying cable as she goes, when the tide returns.

Ibn Battuta is capable of breaking up the hardest subsea soil as it deepens the Son Duong Port in Vietnam's poorest province.

Highlighting the massive warships, cruise liners, trawlers and other vessels that sail the seven seas.

Filled with big toys, guests fly the trapeze, surf and skydive without ever leaving the world's most innovative cruise ship.

To transport one of the world's largest oil rigs, Hawk must sink before she can swim; she submerges her expansive deck to load.

A heavy-lift vessel transports a colossal load from China to Canada in a voyage that will take the ship to its limit.

The Algoma Equinox battles fierce ice, howling winds and challenging waters to transport grain and iron ore.

Collin gets caught in the middle of icy roads; Collin attempts his first solo recovery; Bubba fights to stop a fuel leak and a buckling trailer.

Andrew's sister joins the crew for her first recovery; Eric attempts to keep his crew safe; Collin's once-in-a-lifetime job goes wrong.

Bubba battles a stubborn wreck in the middle of an ice storm; Sonny must improvise while clearing a pile of steel beams; Gary deals with a plummeting tanker.

After three decades on the highway, a major change forces Eric Godard to adapt to a new crew on a tough rollover; a vicious pre-winter storm pushes Sonny into urgent on-the-job training; a jet fuel spill shuts down the entire 401.

When a tanker bursts open east of Toronto, a young operator faces a toxic mess; Gary reacts fast when he spots a dangerous mistake on the road; a rookie takes the controls for his first heavy job.

Steve's crew battles a fiery wreck in the heart of Toronto; the OPP takes to the air to keep the roads safe; when freezing rain ices up the highway around London, a newly-promoted rotator operator gets his first big test.

A pileup on the 401 brings traffic to a standstill and pushes the Ross crew into action; Sonny helps a driver stuck on a dangerous stretch of highway in Toronto; Herb's rookie Zach masters a difficult move for the first time.

A 70-vehicle whiteout crash shuts down Highway 400 and the OPP jumps to organize an army of recovery crews; the Sarnia team struggles to recover a severely damaged trailer without losing the load.

Eric is still working to find his place on the new County/Coxon team when a T-bone semi collision spurs them into action; with his first baby on the way, a blizzard in the east sends Andrew on an urgent rescue mission.

An air ambulance crew takes off after a pileup results in serious casualties; when a low bridge knocks over an industrial payload, Steve and crew battle their way through a sandstorm.

After a triple crash, the crew from Chatham struggles to keep a mangled truck in one piece; a complicated air cushion job tests a new rotator operator; the new heavy crew at Metro gets a bad case of déjà vu.

Herb's team fights fire while tussling with a burned-out semi; as whiteouts rage across the 402 in Sarnia, Mark fights his way through a long backup to reach a job; a unique recovery crew faces a heavy load of peat moss and trailer ready to split.

With his dad away, Mitch works with his older brother to get a stubborn wreck onto the road, but these brothers rarely see eye-to-eye; Glen, Todd and the crew improvise to offload some extreme cargo.

When a rolled-over dump truck spills its load on the 401 in the middle of rush hour, Steve, Sonny and crew must make a split-second decision; Eric and his boss disagree on how to handle a shredded trailer.

Snow squalls attack Highway 402, sending Gary, Collin and Mark to work deep in the trees; a fuel tanker rolls next to rail lines in Toronto's industrial port lands; the Chatham crew improvises against a fire-ravaged wreck.

Mitch's new partnership with his brother is put to the test in the aftermath of a brutal storm; Eric, Derek and crew take on a load of steel pipes threatening to spring loose on the road; Andrew and his team wrestle difficult cargo.

Gary's crew and family come together for a multi-wreck scene blocking the border; low power lines and a bad fuel leak complicate a delicate recovery in Toronto; a garbage hauler creates a heavy mess for the Ross crew.

A load of lumber spills across the 401 in the heart of Toronto, John Allen heads into the first storm of the season; after an injury on the job, Gary must lean on Collin for a heavy yet delicate recovery; Sonny makes a major change in his life.

The OPP must manage a chaotic scene after a thirty-vehicle pileup shuts down the 401; Mitch sets a tight deadline in his first job as leader of the heavy crew; a semi smashes into a culvert, the Ross's try out their newest operator.

Sonny and his new boss face their first heavy test, fighting a semi frozen hard into the mud; a double collision brings border traffic to a halt in Sarnia, forcing Gary and crew to wrangle a difficult load of cargo.

A rolled-over load of scrap metal defies gravity and Kevin's patience; the Cornwall crew rides to the rescue of a fire truck; County Towing struggles to get a grip on an icy highway.

The OPP responds to a tragedy that rocks the towing community; when Sonny gets caught on a dangerous stretch of road, he must turn to an unexpected source for help; a truckload of confetti shreds Mitch's nerves.

A compromised trailer breaks apart in Chatham; John Allen maneuvers a truckload of water.

A tractor wedged between an overpass and a guardrail forces the Ross crew into a game of inches; Herb's crew goes deep into the woods to rescue a tree-bound truck; Sonny tries to clear a stalled semi in a dangerous spot.

A massive storm across the southern tip of the province pushes the County crew into an intense double recovery; a tree stump in the worst possible spot threatens a big job for Duncan.

Mitch from B&G joins forces with John Allen to clean up a triple collision and a badly leaking tanker; a newly promoted rotator op fights a trailer that's ripping in two; Kevin rushes to clear a wreck in time for an important family milestone.

A tractor-trailer rolls over in an icy median; the oldest member of Duncan's team takes on the most dangerous job; a fiery wreck in Toronto turns Steve's crew into a pit crew; swapping wheels in a race against rush hour.

A massive super-storm blasts across the province; Sonny hurries to help a stranded customer.

When the Classic and Lucky crews battle a trailer ready to break in two, they make a drastic decision, turning to their tree expert and his chainsaw; Mike and David Ross ease out a semi caught between a culvert and a heavy steel coil.

John Allen finds himself in need of a heavy rescue when he gets stuck on an icy side road; a rotator operator takes on a challenge when he tries to save a trailer buckling under heavy concrete; a new member joins the Preferred crew.

Racing to prevent a fuel spill, Mitch must execute a complex maneuver he's never tried before; Adam attempts to help out a group of drivers stranded on a dangerous hill; when James Ireland faces a tough wreck, he turns to his wife, Fabiana.

Adam improvises when heavy winds complicate a tough recovery; Gary's new team and hopes are put to the test against a heavy sea container; when a trailer loses its wheels, Duncan has to wrestle it to the road.

With Herb watching over the crew, Zach shakes off his nerves and pulls off a tough move; after a bad crash, the Chatham crew clears the road while preserving a tractor for the police investigation; the Rosses do battle on double fronts.

When Sonny needs to pull off an urgent recovery, he turns to an unexpected source for help; a tight recovery puts Duncan right up against a live lane of traffic; Gary's crew takes on the last big rollover of the winter.

The first storm of the season forces OPP Sgt. Kerry Schmidt to take hands-on action; Collin leads the crew to recover a tanker with a highly toxic payload; the Ross crew faces a trailer on its head that demands a double roll to wrangle it upright.

Bill Wright and his son need to become a tight team on a remote job; a city-based crew heads north to fight a demolished tractor-trailer in rugged terrain; Kevin feels the pressure when a load of steel smashes onto the highway right before rush hour.

Investigators race to find crucial evidence in the wake of a devastating crash; an unexpected malfunction puts Collin directly in the line of fire.

Todd tests his skill against a truck crashed up a steep slope; Bill Wright must learn to trust his son as they struggle against a swampy wreck; a frustrating job rattles Duncan while a key member of his team fights to return from a serious injury.

An overpass jackknife pushes Bill Wright into quick action; Collin's first heavy job after a close call forces him to put his father's new safety plan to the test.

An Eastern Ontario crew works to untangle a truck from a thick stand of trees; Mike Ross and Austin battle a trailer ready to burst; Andrew's crew faces a tragic job after losing a key member of their team.

A tanker full of wine rolls and spills on the 401; Mike McPhee takes his first step back toward the highway after a potentially career-ending accident; Eric and the crew work to save an excavator from the edge of Lake Erie.

A storm slams into Toronto and Kerry takes cleanup into his own hands; Bill Wright is forced to pull off an impossible move; when a truck smashes through an overturned semi, John Campbell has to improvise with the tools at hand.

Duncan takes on a difficult wreck as Mike McPhee returns from the injured list; a load of liquid asphalt threatens to spread.

Bill Wright must perform a complicated rescue; Kevin leaves his home base to work a recovery in the big city; Gary and Collin fight a dumped load of giant boulders; Mitch reveals a tough personal struggle.

Duncan helps an industry veteran take on a heavy rollover in a marathon job that delivers.

Heavy squalls launch a surprise attack on the Ross crew; Sonny handles huge rolls of paper that threaten to tear through a trailer; Eric faces a major decision about how much more heavy recovery his battered body can stand.

When winter mounts a comeback, John Allen spends a night battling a load of spilled scrap metal; Collin faces a tight deadline on a double recovery; Bill Wright makes a call, leading to a farewell for Mitch.

A double tanker loaded with gasoline smashes into a house; Duncan Cooper puts his new 50-ton rotator to the test; Gary and Collin bring their rookie crew to a bad collision blocking the road to the border.

Sgt. Kerry Schmidt fights to get stuck commuters moving; Austin Hutchinson is forced to battle a nasty wreck all on his own; Abrams' John Allen tackles a snowplow blocking a vital ramp.

Sgt. Kerry Schmidt coordinates heavy tows and Sonny Subra must clear a ramp littered with semis; Herb's Towing takes on a B-train that slid right off the highway; Eric Goddard brings a brand-new heavy wrecker to recover a heavy trailer.

An armored truck rolls over on the 401; Kim Reid's crew deals with a toppled trailer in a risky spot; Ross Services handles a tanker full of gasoline; Gary and Collin have conflicting ideas about getting a badly compromised trailer back to the road.

Chad Grenier deals with a spun-out tractor; Bill Wright brings his new rotator to a dangerous corner of the 401; the Herb's Towing crew faces a major challenge when a semi barrels across both sides of the highway.

A heavy crew must remove a load of industrial glass panels from a buckled trailer; a double wreck pushes crews into a tense race; Gary gives a rookie operator the chance to learn the ropes at a difficult scene.

Eric and Senior work to coax a semi back on the road.

When a transport rolls on a dangerous curve, John Campbell needs to master his new rotator in a hurry; Duncan Cooper and crew take on a full load of medical supplies dumped on the side of the highway.

Sonny pushes his small wrecker to its limit; a load of buttermilk spurs a messy cleanup; the newest member of Andrew's crew gets to prove her worth against a badly mangled wreck.

Herb takes a break from retirement to help the crew wrangle a huge and heavy job; an OPP constable makes a very unusual traffic stop; the Preferred team confronts a challenge that even Gary has never seen before.

The Preferred crew must split up to clear two wrecks; Gary desperately wants to have Collin back at his side; Mitch Wright returns home just in time to pick up a shovel and lead a frustrating recovery against a dump truck filled with manure.

Sgt. Kerry Schmidt works with Abram's crew to clear the highway; Duncan teams with John Campbell on a semi mired deep in mud; Ross' Mike and Austin attempt to recover a trailer carrying an unusual load; James and Fabiana respond to a fire.

Sonny needs to clear a spun-out semi in time to make a family commitment; after a transport veers off the highway, Eric faces a hard truth about his career; Andrew's crew must overcome intense resistance from a truck frozen deep in the ditch.

Rookie Sonny faces a 40-car pile-up that turns a major highway into a war zone;a fierce storm triggers a triple-semi crash; a father-son team race to clear the road as weather blasts in.

A semi-truck crash shuts down a crucial border route; rookie heavy rescue driver Sonny helps a trucker stuck on a dangerous stretch of highway; a tanker wreck causes commuter chaos in Toronto.

A courier truck rolls over; a vicious storm puts Mark in the middle of a crash zone; the crew dives for cover during an icy airbag job.

James and Bubba recover a semi smashed into a building; Kevin faces problems with a tractor-trailer crashed in deep mud.

Gary's team fights to upright a battered trailer; a rookie takes his first shot as lead operator on the rotator.

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.

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.

During a spring storm, Steve cleans up a fuel spill blocking the 400, while Sonny struggles to keep the alternate route moving; John Allen recovers a loaded semi that went for a wild airborne ride.

Members of the Highway Thru Hell crew join the 401 crew to weigh in on the unique challenges of recovery operations in Ontario and B.C. and compare the biggest wrecks and toughest jobs over the past winter.

Sonny and the team from Steve's Towing fight to remove the wreckage of a dump truck embedded in an overpass on the 401; James Ireland faces a trailer threatening to cave in on his crew.

A freak storm unleashes a 100-car pileup east of Toronto, pushing Steve and Sonny to lead the recovery charge; Kevin fights a tough wreck after a trucker smashes into an orchard.

A massive multiple-semi crash in a tunnel forces the Coxon crew to clear a big mess in a tight space; Mark Haslett heads to the rescue when a woman is trapped on a dangerous stretch of the highway in Toronto.

When a violent windstorm flips a tractor-trailer on an exposed bridge, Kevin works under the most difficult and dangerous conditions of his career; James takes on a wind-battered wreck of his own.

A tragic collision between two semis sends Bear and the crew from Ross into the fray; Nate and Andrew improvise after a load of lumber rolls on the 401, backing up traffic all the way to Quebec.

Sonny hunts for a shortcut across town after a runaway van smashes through a wall and into the path of a full-speed truck; the crew from Herb's hurries to save a load of pharmaceuticals before it freezes.

Freezing rain scatters Gary's team, forcing him to work solo to open the continent's busiest border crossing; in Windsor, Brad, Eric and crew fear a tragedy when they untangle a sedan badly crushed by a semi.

A storm sweeps across the province, sending heavy rescue crews scrambling; in Hamilton, Kevin fights to clear a wreck in time for the plows to get through.

The pressure is on for Steve when a flipped truck blocks access to the airport; Coxon fights a wreck with a toxic payload; a wild rollover rips a cab off its chassis and leaves a trail of destruction for the Ross crew.

A heavy wreck and a frustrating recovery threaten to overwhelm Kevin; after a big change in his career, Sonny struggles to make a mark when a heavy load flips in the middle of the city.

Sonny deals with a jackknife during the first winter storm; John deals with a messy wreck under an overpass.

Kevin orchestrates a team of heavy operators during a highway cleanup job; Gary's crew is sent on a marathon recovery.

The Sarnia crew battles exhaustion and frustration on a wreck that refuses to stop fighting; a badly-timed breakdown puts Eric on edge; Sonny works to free a fleet of plows trapped on the highway.

Thick fog descends on the highway, turning a seemingly simple recovery into one of the most dangerous jobs of Gary's career; a mangled trailer forces the Ross crew to take a chance on a very unconventional maneuver.

The crew scrambles to keep the roads open during a whiteout, but drivers wind up stranded on the 402; John battles high winds during a job high above the 401.

Herb's Towing turns a wreck on its head with some unexpected assistance; with traffic backing up for 50 kilometers, a fuel leak complicates an already stressful recovery for Steve and the crew.

The Ross crew responds to an overturned wreck; the road to the boarder is shut down; John faces a steep ravine for a recovery.

The crew from Herb's faces a night of non-stop recoveries when a blizzard hits; a veteran fights the toughest battle of his career at a multi-semi pileup.

The crew responds to a wreck scene that stretches over half a kilometre; Sonny takes on the role of mentor; Onne and the crew work to save a trailer.

Gary and the team tackle a tanker wreck; Steve's crew fights to get a tall tractor off the highway.

The Ross crew works the biggest, most complex job of the season after a bridge collapses in a river; a young rotator operator gets in over his head.

Collin gets caught in the middle of icy roads; Collin attempts his first solo recovery; Bubba fights to stop a fuel leak and a buckling trailer.

Andrew's sister joins the crew for her first recovery; Eric attempts to keep his crew safe; Collin's once-in-a-lifetime job goes wrong.

Bubba battles a stubborn wreck in the middle of an ice storm; Sonny must improvise while clearing a pile of steel beams; Gary deals with a plummeting tanker.

After three decades on the highway, a major change forces Eric Godard to adapt to a new crew on a tough rollover; a vicious pre-winter storm pushes Sonny into urgent on-the-job training; a jet fuel spill shuts down the entire 401.

When a tanker bursts open east of Toronto, a young operator faces a toxic mess; Gary reacts fast when he spots a dangerous mistake on the road; a rookie takes the controls for his first heavy job.

Steve's crew battles a fiery wreck in the heart of Toronto; the OPP takes to the air to keep the roads safe; when freezing rain ices up the highway around London, a newly-promoted rotator operator gets his first big test.

A pileup on the 401 brings traffic to a standstill and pushes the Ross crew into action; Sonny helps a driver stuck on a dangerous stretch of highway in Toronto; Herb's rookie Zach masters a difficult move for the first time.

A 70-vehicle whiteout crash shuts down Highway 400 and the OPP jumps to organize an army of recovery crews; the Sarnia team struggles to recover a severely damaged trailer without losing the load.

Eric is still working to find his place on the new County/Coxon team when a T-bone semi collision spurs them into action; with his first baby on the way, a blizzard in the east sends Andrew on an urgent rescue mission.

An air ambulance crew takes off after a pileup results in serious casualties; when a low bridge knocks over an industrial payload, Steve and crew battle their way through a sandstorm.

After a triple crash, the crew from Chatham struggles to keep a mangled truck in one piece; a complicated air cushion job tests a new rotator operator; the new heavy crew at Metro gets a bad case of déjà vu.

Herb's team fights fire while tussling with a burned-out semi; as whiteouts rage across the 402 in Sarnia, Mark fights his way through a long backup to reach a job; a unique recovery crew faces a heavy load of peat moss and trailer ready to split.

With his dad away, Mitch works with his older brother to get a stubborn wreck onto the road, but these brothers rarely see eye-to-eye; Glen, Todd and the crew improvise to offload some extreme cargo.

When a rolled-over dump truck spills its load on the 401 in the middle of rush hour, Steve, Sonny and crew must make a split-second decision; Eric and his boss disagree on how to handle a shredded trailer.

Snow squalls attack Highway 402, sending Gary, Collin and Mark to work deep in the trees; a fuel tanker rolls next to rail lines in Toronto's industrial port lands; the Chatham crew improvises against a fire-ravaged wreck.

Mitch's new partnership with his brother is put to the test in the aftermath of a brutal storm; Eric, Derek and crew take on a load of steel pipes threatening to spring loose on the road; Andrew and his team wrestle difficult cargo.

Gary's crew and family come together for a multi-wreck scene blocking the border; low power lines and a bad fuel leak complicate a delicate recovery in Toronto; a garbage hauler creates a heavy mess for the Ross crew.

A load of lumber spills across the 401 in the heart of Toronto, John Allen heads into the first storm of the season; after an injury on the job, Gary must lean on Collin for a heavy yet delicate recovery; Sonny makes a major change in his life.

The OPP must manage a chaotic scene after a thirty-vehicle pileup shuts down the 401; Mitch sets a tight deadline in his first job as leader of the heavy crew; a semi smashes into a culvert, the Ross's try out their newest operator.

Sonny and his new boss face their first heavy test, fighting a semi frozen hard into the mud; a double collision brings border traffic to a halt in Sarnia, forcing Gary and crew to wrangle a difficult load of cargo.

A rolled-over load of scrap metal defies gravity and Kevin's patience; the Cornwall crew rides to the rescue of a fire truck; County Towing struggles to get a grip on an icy highway.

The OPP responds to a tragedy that rocks the towing community; when Sonny gets caught on a dangerous stretch of road, he must turn to an unexpected source for help; a truckload of confetti shreds Mitch's nerves.

A compromised trailer breaks apart in Chatham; John Allen maneuvers a truckload of water.

A tractor wedged between an overpass and a guardrail forces the Ross crew into a game of inches; Herb's crew goes deep into the woods to rescue a tree-bound truck; Sonny tries to clear a stalled semi in a dangerous spot.

A massive storm across the southern tip of the province pushes the County crew into an intense double recovery; a tree stump in the worst possible spot threatens a big job for Duncan.

Mitch from B&G joins forces with John Allen to clean up a triple collision and a badly leaking tanker; a newly promoted rotator op fights a trailer that's ripping in two; Kevin rushes to clear a wreck in time for an important family milestone.

A tractor-trailer rolls over in an icy median; the oldest member of Duncan's team takes on the most dangerous job; a fiery wreck in Toronto turns Steve's crew into a pit crew; swapping wheels in a race against rush hour.

A massive super-storm blasts across the province; Sonny hurries to help a stranded customer.

When the Classic and Lucky crews battle a trailer ready to break in two, they make a drastic decision, turning to their tree expert and his chainsaw; Mike and David Ross ease out a semi caught between a culvert and a heavy steel coil.

John Allen finds himself in need of a heavy rescue when he gets stuck on an icy side road; a rotator operator takes on a challenge when he tries to save a trailer buckling under heavy concrete; a new member joins the Preferred crew.

The Royal Danish Navy's new frigate must prove she can fight even when wounded.

The world's largest jack-up drilling rig faces high stakes and tough decisions during the biggest storm in 20 years in the North Sea.

One of the world's largest subsea construction vessels sets out to build a massive natural gas compression station underwater.

The world's largest roll-on/roll-off vessel races against the clock to load and transport cars and equipment across the Atlantic Ocean.

This U.S. Navy hospital ship travels from Colombia through the Panama Canal on a mission of mercy to the tiny Caribbean island of Dominica.

Alaska's biggest longline fishing ships battle high waves and hurricane-force winds to bring home a massive catch of cod.

One of the world's most advanced drill ships builds an oil well more than a mile below the Gulf of Mexico.

The world's most adventurous cruise ship, MS Fram, battles ice-choked fjords of Greenland to visit wildlife and icebergs.

The Yasin Bey, a ship and power plant all in one, takes a four week voyage from Turkey to Indonesia to deliver much-needed electricity.

Norrona ferries passengers, vehicles and million-dollar cargo to Iceland and the Faroe Islands on one of the longest, toughest ferry routes in the world.

One of the world's largest container ships races from port to port in China, Malaysia and Germany, transporting almost 20,000 crates of cargo.

MSC's biggest cruise ship navigates tight Mediterranean harbors, offering a brand new water park, classic excursions and Cirque du Soleil at Sea.

With specialized cranes and underwater robots, Edda Freya repairs and replaces critical pipelines running to an oil and gas platform.