The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.

The Boeing B-17 Flying Fortress is one of the most lethal bombers of the U.S. Air Force in WWII's European and Pacific campaigns; among other things, the plane delivered food to the German-occupied Netherlands.

A look at the rise and fall of the infamous Nazi dive bomber Ju-87 Stuka, an aircraft of World War II.

The Spitfire's legend and role in the Battle of Britain.

The inside story of how the AH/MH-6 evolved over the decades to become an irreplacable aircraft for the U.S. Military.

The inside story of Britain's flagship super jet of the Cold War era, the Hawker Hunter, and its most thrilling flights during the late 20th century.

The history of the F-111 and how the fighter-bomber no one wanted went on to dominate both air and battlefields in the late 20th century.

The Empire State of the South; ancient Moundbuilders to the Cherokee Indians.

Oregon's Cascade Mountains; Columbia River waterway.

A high-flying tour of Pennsylvania.

A sky-high tour over Minnesota reveals the state's ancient, glacial landscapes and tells the stories of the pioneers who helped build the nation.

A day-long aerial tour of the New England city of Boston in Massachusetts; where Americans first rebelled against Britain by dumping chests of tea into the harbor and where rock band Aerosmith first made it big.

An aerial tour over the places made famous by America's most influential men and women.

A view of Idaho from the air reveals a state filled with agricultural fields, lands untouched by human hands, and riches in the form of gold, ski resorts and spuds.

On 25 July 2000, a Concorde operating as Air France Flight 4590 stalled and crashed into a hotel in Gonesse shortly after takeoff from Charles de Gaulle Airport, killing all the 109 people on board and 4 on the ground.

On 15 September 1989, a National Oceanic and Atmospheric Administration aircraft tasked with intercepting Hurricane Hugo over the Caribbean islands is jolted by strong winds, causing an engine to catch fire and fail.

A pilot's decision to let his 15-year-old son fly has disastrous consequences on a commercial flight.

A Russian passenger jet crashes into the Volga River, killing almost everyone on board; the incident turns into a national tragedy when rescuers discover the plane carried some of the country's famous athletes.

JFK Jr. disappears on the way to Martha's Vineyard; a captain loses his bearings and crashes over the Red Sea; pilots crash a plane over Indonesia.

Following three air crash investigations in which examiners are pushed to the limit to crack the cases.

[EPG Series] History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

A Swissair passenger jet catches fire midflight and crashes into the Atlantic, leading to one of the largest investigations in aviation history.

A challenging descent in the Himalayas turns tragic when the pilots miscalculate their approach to a Kathmandu airport.

Three planes fall prey to deadly winds, and it is up to investigators to find out why.

On July 17, 2007, TAM Airlines Flight 3054 slides off runway 35L at Congonhas Airport in São Paulo, Brazil, and crashes at high speed into a warehouse adjacent to a petrol station killing nearly 200 people.

Following the story of the Scandinavian Airlines Flight 751 and Captain Rasmussen.

A look at the string of events that caused a midair collision in 2002 over the skies of southern Germany; a Bashkirian Airlines Flight collides with a DHL Flight in German airspace near Überlingen.

A United States Air Force transport aircraft conducting the inaugural flight of Operation Babylift suffers an explosive decompression when the rear cargo door fails and crashes into a paddy field while attempting an emergency landing.

Investigators discover a shocking mistake when pilots must ditch their plane in the Mediterranean, killing 14 of the 34 passengers.

Delta Air Lines Flight 1141 crashes beyond the runway while taking off from Dallas/Fort Worth International Airport.

Experts examine a departing DC-9 in Detroit which gets lost in the fog and ends up in the path of an oncoming 727.

Louisiana's wetlands and underwater oil fields.

A coast-to-coast aerial journey across America, visiting locations made famous by movies such as Rocky, Citizen Kane, Forrest Gump and others.

Explore the forests, shores, bridges and tunnels of one of American's 13 original states, New Jersey.

Home to some of America's highest mountains; Mount St. Helens.

Natural wonders, manmade marvels, hidden treasures and places of inspiration.

Viewing Oklahoma from the sky reveals a state filled with tall-grass prairies and man-made wonders; the Dust Bowl, Tornado Alley and buffalo-filled plains; it also shows a history steeped in tragedy and devastation.

A flight over Arizona explores the state's storied past, architectural achievements and landscapes, including America's natural wonder, the Grand Canyon.

An aerial tour over America's Great Plains tracks the prairies, farms, oilfields and wildlife.

Vast cotton fields, Gulf coast beaches; famous Civil Rights marches; NASCAR's most dangerous track; steel factories.

An aerial tour of Nevada; the state's deserts, ghost towns, neon cities and Hoover Dam; its history built on epic booms and busts.

An aerial tour of the world's first national park showcases Yellowstone's diverse wildlife and rich history.

A supervolcano brewing beneath Yellowstone National Park could be the worst natural disaster in history.

The eruption of Guatemala's Fuego volcano kills hundreds as a pyroclastic flow roars down its slopes; the eruption of Hawaii's Kilauea volcano is a slow-motion disaster, starting with small earthquakes before bursting into residential neighborhoods.

On the evening of May 3, 1999, the residents of Oklahoma City were hit with a devastating tornado.

On May 18, 1980, Washington state's Mount St. Helens erupts; revisiting the destructive volcanic event and revealing ten failures that escalated the catastrophe, including ignored warnings, inadequate safety zones and poor rescue planning.

When a magnitude 6.9 earthquake strikes San Francisco in 1989, the city is thrown into chaos.

Bound from Jacksonville, Fla., to San Juan, Puerto Rico, crew members on the SS El Faro containership find themselves just 20 miles from the eye of a hurricane; after the ship goes missing, investigators ask why the crew took such a deadly course.

Modern history's worst disasters are revisited and analyzed to identify ten key errors that led to each one.

An exploration of the threat posed by bird strikes in commercial and military air accidents as well as a closer look at the day when US Airways Flight 1549 struck a flock of Canadian geese and lost engine power over the Hudson River.

US Airways Flight 1549 suffers a bird strike with a flock of Canada geese, causing both engines to fail.

The crew of a commuter flight over France makes a sight-seeing detour that sets off a deadly chain of events.

After experiencing icing conditions, a turboprop slams into an Argentine desert; investigators are mystified by what they uncover.

Five aviation disasters and the changes they have forced air-traffic controllers to make.

On 13 January 1982, Air Florida Flight 90 stalls at 300 feet altitude, strikes a road bridge and crashes into the Potomac River, killing 78 people.

A look at America's landmarks, including a view of bears catching clams in Alaska's rivers; a high-flying tour reveals Alaska's call of the wild spirit that has lured adventurers and dreamers north for centuries.

The world's largest volcanic island; Iceland's landscapes, forged by fire and ice; a tour over Alaska, the residents it attracts and the wildlife that thrives in these unique surroundings.

An aerial tour over America's coastlines explores the visual splendor and rich history of the nation's varied borders.

Zoom above, and below, some of the Golden State's greatest monuments.

Soaring above the Cornhusker State's vast farms, towering spires, desolate badlands and gleaming cities.

A sweeping tour over popular destinations in America, including the Badlands, Nantucket, the National Mall and more.

Alpine valleys; Rocky Mountains; Denver's towering skyscrapers.

An aerial journey over Ohio showcases the Buckeye State's autumnal vistas, majestic rivers, epic skyscrapers and battlegrounds.

An amazing aerial tour over Utah reveals a state full of otherworldly landscapes and landmarks, including a history steeped in Mormonism, pioneering tragedy, and Olympic glory.

An aerial exploration of Wyoming reveals the Cowboy State's controversial history while highlighting its breathtaking canyons and volcanic formations.

An aerial tour of Kansas shows a state with varied landscapes, scenic areas and historical conflict sites.

Taking flight for a bird's eye tour of America's rivers, lakes and canals.

Avianca Flight 52 is delayed numerous times by bad weather en route; it is dangerously low on fuel as it attempts a landing at New York City.

On June 27, 1980, Aerolinee Itavia Flight 870 crashes into the Tyrrhenian Sea near the island of Ustica, Italy; all 81 people on board are killed.

Trace the chain of events that led to a deadly explosion on the Deepwater Horizon rig and unleashed the largest marine oil spill in history; see the failed part that caused the NASA Challenger Space Shuttle to explode seconds after liftoff.

A Colorado commuter flight crashes five miles short of the runway and the reasons why rock the airline industry.

Trace the chain of events that led to a deadly explosion on the Deepwater Horizon rig and unleashed the largest marine oil spill in history; see the failed part that caused the NASA Challenger Space Shuttle to explode seconds after liftoff.

Pilots attempt to land their Boeing 737 in an Indonesian river after losing their engines and electrical power.

Trace the chain of events that led to a deadly explosion on the Deepwater Horizon rig and unleashed the largest marine oil spill in history; see the failed part that caused the NASA Challenger Space Shuttle to explode seconds after liftoff.

Two 747s collide on the runway of a small airport in the Canary Islands, resulting in history's deadliest air crash.

On 18 June 1972, British European Airways Flight 548 stalls and crashes in a field near Staines shortly after takeoff from London Heathrow Airport, killing all 118 people on board.

After a Boeing 727's near-fatal nosedive over Michigan, investigators risk their own lives to determine what caused the aircraft to lose control.

The inside story of one of history's most infamous and complex investigations: the 1996 crash of TWA Flight 800.

The 2000 crash of an Alaska Airlines plane just off the California coast leads to a disturbing discovery about the company's cost-cutting procedures.

A look at several air disasters that involved small components that failed; accidents caused by minor defects or errors; how the follow-up investigations led to changes that have made flying safer.

Air accident survival stories; keeping passengers and crews alive when disaster strikes.

A pilot heads for a decommissioned air force base when the Boeing 767 jet he is flying unexpectedly runs out of fuel.

A computer glitch causes a highly automated Qantas Airways flight to nearly fall out of the sky; Australian investigators must find the cause before it happens again.

From delusional hijackers to suicidal pilots, three flights fall victim to astonishing acts of sabotage.

A new investigation sheds light on the controversial 1961 plane crash that killed U.N. Secretary-General Dag Hammarskjöld.

Leading aviation experts are confronted with a shocking theory as they investigate one of the greatest aviation mysteries of all time.

When an African airliner mysteriously crashes, Namibian investigators have to rule out a host of possible causes before reaching a conclusion.

When a turboprop loses engine power and crashes in Papua New Guinea, investigators discover a fatal defect existing in Dash 8s around the world.

When an Airbus crashes into the Mediterranean Sea, Egyptian authorities, French investigators and an Italian journalist theorize different causes for the accident.

An investigation into Continental Airlines Flight 1713, which crashed on takeoff from Denver during a snowstorm in 1987, changes commercial flight forever.

Trace the chain of events that led to a deadly explosion on the Deepwater Horizon rig and unleashed the largest marine oil spill in history; see the failed part that caused the NASA Challenger Space Shuttle to explode seconds after liftoff.

In 1944, the Allied invasion of Nazi-occupied Europe brings the hope of freedom and the devastation of war to the people of France.

New colorized footage and testimony reveal the cost paid by the Allies and civilians to free Belgium and the Netherlands from Nazi occupation.

In late 1944, Hitler forces the Americans into their biggest battle of the war when he launches a surprise attack into liberated Belgium.

New colorized footage and testimony reveals the cost of victory, the aftermath of war and the liberation of the camps and the destruction of Germany.

How the legendary "Dambuster" bomber squadron of WWII fooled Nazi Germany into believing the Allied invasion was going to be at Calais, rather than Normandy, and went to on to destroy Hitler's super weapons.

America's first victory in the Pacific during World War II is retold from the vantage point of the three U.S. attack planes as they overcame the enemy ambush to face off against the Mitsubishi A6M Zero, a long-range fighter, in the air.

Passengers and crew escape a jet that skid off the runway before catching fire.

When an airbus A330 loses both engines, its pilots must think of a solution before they crash into the South China Sea.

After a seemingly routine landing, a Boeing 737 erupts in flames, putting 165 debarking passengers and crew in jeopardy.

Three FedEx employees must regain control of their plane when a coworker attacks them in midair.

When former race car driver Niki Lauda's planes nosedives into a Thai jungle, a one-in-a-million failure reveals a weak spot in every Boeing 767; radio silence between pilots and air traffic controllers send investigators hunting for answers.

A cockpit window on British Airways Flight blows out, partially ejecting and injuring the captain; the co-pilot completes an emergency landing.

Royal Clipper is the largest sailing cruise ship in the world, celebrating tall ships of the 19th century while offering modern-day service for its guests.

Set a course for breathtaking sights on Koningsdam's 15-day voyage from Amsterdam to the northern tip of Norway.

Take a river tour through some of Europe's greatest cities--Budapest, Vienna, and Amsterdam--on Viking Longship Gefjon.

Azamara Journey travels the rivers of Southeast Asia, delivering passengers to exotic cities and hidden treasures that larger cruise ships cannot reach.

We follow passengers and crew aboard Viking Star during its two-week tour from Barcelona to its home port in Bergen, Norway.

The new Viking Sea cruise ship whisks guests away on a journey across the Arctic Circle and into the heart of Norway.

On Europe's high-speed rail network, between Barcelona and Madrid, crews work to expand the infrastructure for a new train.

VIA Rail's passenger train travels between Vancouver and Toronto on four-day, four-night journey that cater to everyone.

Travel aboard the colourful trains of the State Railway of Thailand and explore the famed Death Railway; the trains travel through ancient areas, historic tunnels, and raging rivers.

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

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

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

Take a cruise where the guests choose the ports to visit and the captain and crew work overtime to make it happen.

The only cruise ship designed specifically to navigate the treasures and dangers at the southern tip of South America.

The world's largest serially manufactured cargo plane, the Antonov 124, was built to move Soviet military vehicles and equipment.

Hector Rail's trains haul timber to a pulp mill in Ostrand, Sweden on some of the most difficult railways in the country.

This 50-year-old ocean liner offers off-season Baltic tours, battling unpredictable weather to deliver one-of-a-kind experiences.

One of Holland America Line's largest cruisers makes its debut in the Caribbean, highlighted by a visit to an exclusive private island resort.

A trip through Lima details the voyage's breathtaking scenery and engineering challenges.

The Glacier Express features cutting-edge technology to pull the train up the steepest slopes on its route across the Swiss Alps.

Experience romance on a mega cruiser that pampers its guests with the best of Italian design and American convenience.

The world's latest, most-advanced expedition cruise ship Roald Amundsen whisks passengers on an adventurous voyage to Antarctica.

Japan's largest cruise ship brings East and West together on a cruise featuring cherry.

We hop aboard a seven-day cruise to the Canary Islands and Madeira aboard the first large liner to run purely on cleaner-burning liquefied natural gas.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

Architects and engineers build an eco-friendly convention center on Vancouver's waterfront, a lift bridge in Bordeaux and a cocoon-shaped skyscraper in Tokyo each with unique challenges like marine habitats and massive spans.

A dazzling new 1400 foot tapering skyscraper is built right next to New York's Grand Central. A curving wine museum requires ingenious engineering in Bordeaux, France. And possibly the world's most glamorous parking garage.

The engineering secrets behind a massive sky garden in Singapore, the world's most slender tower in Brighton, and a railway station in the shadow of Vesuvius.

A new Olympic and Paralympic museum tests engineers with its trailblazing accessible design. A dazzling curved glass skyscraper battles gravity in Milan. And a student center built under a noisy railroad.

Mike Davidson embarks with the team to one of the most extreme, avalanche-prone ski mountains in the world: Snowbird; they battle to keep the steep and deep slopes safe with shovels, snowcats and even a WWII Howitzer.

Mike Davidson goes to the biggest automated package sorting facility in the world, UPS Worldport in Louisville, Kentucky; two million packages go through here every day.

Mike is in Iceland, where teams harness the power of volcanos to keep the geothermal energy flowing; they battle harsh weather to maintain and upgrade giant power systems, fixing miles of steam pipes. and bringing a dead well back to life.

An in-depth look at how things are repaired.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.

Building an eco-friendly visitor center in the permafrost on Colorado's Pikes Peak tests the team. A museum is constructed in a disused dry dock that's in danger of collapse.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created.

A towering bridge in France; upside-down hotel in China; Italy's forest into the sky.

Trace the chain of events that led to a deadly explosion on the Deepwater Horizon rig and unleashed the largest marine oil spill in history; see the failed part that caused the NASA Challenger Space Shuttle to explode seconds after liftoff.

On 25 May 1979, the number-one engine on American Airlines Flight 191 detaches moments after taking off from Chicago O'Hare International Airport. The aircraft banks to the left and crashes into an open field, killing all 271 people on board.

During a storm, a strong gale slams Delta Airlines Flight 191 to the ground, killing most people on board.

A blade on the left-side propeller of Atlantic Southeast Airlines Flight breaks off; the imbalance of the rotating propeller causes the engine to partly tear itself from its mounting.

When a commuter flight crashes mysteriously just a mile from a Missouri runway, investigators turn their attention to the final seconds in the cockpit.

A mechanical problem aboard an Air Canada plane turns into an all-out emergency six miles in the air.

The roof of an Aloha Airlines 737 tears off the plane at 24,000 feet in the sky.

A Northwest Airlines flight cruises above the Bering Sea before problems develop and pilots must make an emergency landing in Anchorage.

An air traffic controller's mistake causes a Boeing 737 to land on a runway already occupied by another aircraft.

A look at some of the rescue ships of the past 200 years of wartime and the brave men and women who risked their lives to save others.

A look at experimental ships and revolutionary designers that have changed the tide of war through the centuries.

A look at how technological advances over the centuries have transformed maritime warfare.

Vessels that operate in secret, unseen by their enemies, from secret missions that helped win World War II to modern stealth ships using strange shapes and technology to avoid spying ears and eyes.

A look at how maritime task forces and the Coast Guard are keeping commercial vessels and US shores safe from pirates and drug smugglers.

A retelling of the D-Day invasion and its critical naval operation involving an armada of diverse and ingenious vessels.

A comprehensive look at the naval battle of Guadalcanal in November 1942 and the heroic efforts of U.S. sailors who held off powerful Imperial Navy.

The evolution of amphibious assault vehicles, including the restoration of Britain's last surviving LCT 7074 landing craft, designed to carry six Churchill tanks.

A look at how the role of battleships changed over the course of the First and Second World Wars.

From tests in the River Thames, to the German's deadly U-boat attacks in World War II, this episode explores the silent threat of submarines.

The massive AC-130 provides unparalleled close air support to U.S. and allied ground troops.

An inside look at the P47 Thunderbolt and the critical role it played in both the European and Pacific Theaters of World War II.