A billion-dollar Stealth Bomber crashes at a U.S. Air Force base-the costliest aviation disaster ever. Bad data misleads a charter flight into a Portuguese mountain, and conflicting alarms send a cutting-edge jetliner plunging into the Atlantic.

The business jet carrying PGA golfer Payne Stewart and former Alabama football quarterback crashes; how loss of pressurization and structural failure led to this crash and the deadliest aviation accidents in both Greek and Taiwanese history.

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.

Korean Air Cargo Flight 8509 crashes shortly after take off from London Stansted Airport on December 22, 1999.

Arrow Air Flight 1285 with 248 American soldiers on board crashes seconds after refueling in Newfoundland.

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

After a passenger jet miraculously survives a collision with trees while landing, investigators attempt to uncover why the plane was flying so low.

Faced with a midair crisis, pilots must make a life or death decision, but the wrong approach can trigger a far more serious problem.

On 25 July 2000, a Concorde operating as Air France Flight 4590 stalls and crashes into a hotel in Gonesse shortly after takeoff from Charles de Gaulle Airport, killing all of 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.

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

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

A tour over two U.S. territories, Puerto Rico and the U.S. Virgin Islands.

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.

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

From battlefields where hundreds died to Beale Street where musical legends were born.

A small state has a whole lot of history.

Northern state's green forests; red-painted barns and sugar maples.

A high-flying tour of Connecticut; exploring the safe harbors, buildings and rich maritime history; the home state of Mark Twain, PT Barnum and Katharine Hepburn; the exclusive Gold Coast, the Thimble Islands and the historic cities.

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.

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

A cross-country flight across America reveals the nation's most iconic industries, the people behind them and the stories of how they came to be.

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

The Nolinor 737's flight crew ferries nearly 10,000 pounds essential food, vital mining equipment and 57 miners to the Arctic, where bad weather wreaks havoc with the plane and the mission.

Baffinland Mines needs to get equipment to a remote mine in Nunavut to support shipping operations for the summer and have hired one of Volga-Dnepr's Ilyushin-76.

The Blue Angels run through their unique, specialized training.

SOFIA, the largest airborne observatory in the world, boasts a 17-ton telescope capable of making observations impossible for ground-based telescopes.

The Martin Mars water bomber is the world's largest seaplane and has flown more than 8,000 firefighting missions.

In the Alps of Switzerland, Mike helps an elite team install a new cable (rope) system on an iconic mountain gondola line, helps fix the world's steepest cogwheel railway track and explores mountaintop family farms only accessib.

A billion-dollar Stealth Bomber crashes at a U.S. Air Force base-the costliest aviation disaster ever. Bad data misleads a charter flight into a Portuguese mountain, and conflicting alarms send a cutting-edge jetliner plunging into the Atlantic.

TANS Perú Flight 204 crashes into a muddy swamp while attempting to land at Pucallpa Airport, Peru, in a thunderstorm, killing 40 of the 98 people on board.

Featuring captivating reenactments and state-of-the-art CGI; Air Crash Investigation uncovers the truth behind the most legendary aviation disasters of all time.

An investigation into a jet crash from 2008 leads to a drastic change into the Russian aviation system.

A U.S. military plane veers off course and flies into a mountain while attempting to land at Dubrovnik Airport in Croatia in heavy fog, killing all 35 people on board.

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

Louisiana's wetlands and underwater oil fields.

A journey over America's western landscape featuring.

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

An aerial tour of New York City, spanning the city's five boroughs, capturing man-made and natural wonders; revealing the ways its citizens live, work and play.

Ancestral home of the Abenaki Indians; Henry David Thoreau's first book; Mount Monadnock; New Hampshire is seen from the air.

A flight over Massachusetts explores the sites; the Bay State, from Martha's Vineyard to the Bambino's Curse, seen from the air.

Tour the Wisconsin State Capitol and Milwaukee City Hall, once the tallest building in the world.

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

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

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

One of the most beautiful states on the Atlantic Coast.

Three flight crews face impossible odds: a Boeing 707 loses engines over the Alps as fire spreads, Air Astana 1388 goes out of control over Portugal, and a bomb on PA 434 severs control cables and blasts a hole in the fuselage.

A billion-dollar Stealth Bomber crashes at a U.S. Air Force base-the costliest aviation disaster ever. Bad data misleads a charter flight into a Portuguese mountain, and conflicting alarms send a cutting-edge jetliner plunging into the Atlantic.

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing. American 1572 hits a storm and loses both engines amid a tower shutdown. And crosswinds challenge an Air France crew already halfway down the runway.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing. American 1572 hits a storm and loses both engines amid a tower shutdown. And crosswinds challenge an Air France crew already halfway down the runway.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing. American 1572 hits a storm and loses both engines amid a tower shutdown. And crosswinds challenge an Air France crew already halfway down the runway.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

A British Airways Flight's engines failure to respond cause the plane to crash-land just short of the runway.

A modern turboprop nosedives towards the North Sea after being struck by lightning, an unusual feature in the plane may explain why.

SilkAir Flight 185 crashes into the Musi River in Indonesia after abruptly diving from its cruise altitude.

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

The dashcam of a passing car captures stunning footage of the final moments of a Taiwanese commuter aircraft as it banks steeply, clips an elevated highway and nosedives into the river; investigators find no signs of pre-impact malfunction.

A Boeing 737 is rocked by a midair explosion that challenges its pilots and nearly ejects a passenger out of a blown-out window.

Caught in a major tropical storm, a 737 crashes just short of the runway on a Caribbean island, but the accident may not have been weather-related.

When a plane carrying Russian tourists crashes in Egypt, investigators face political tensions and terrorist claims in their search for the truth.

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 commercial airliner crashes minutes after taking off from an airport in Bucharest causing suspicions to rise.

When a modified WWII fighter plane crashes into the crowd at a Nevada air show, investigators struggle to find the cause.

A large cargo jet slices into an apartment complex in Amsterdam and reveals a potentially lethal problem threatening every 747 in the sky.

Investigators try to solve the mystery of a plane whose captain and co-pilot are missing.

Trans-Air Service Flight 671 suffers an in-flight separation of its two right engines while en route to Kano, Nigeria, forcing the pilots to make an emergency landing at Istres-Le Tubé Air Base in France.

When a DC-8 cargo jet crashes on approach to a U.S. naval base in Guantanamo, investigators wonder if Cuba played a role.

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

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

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

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing. American 1572 hits a storm and loses both engines amid a tower shutdown. And crosswinds challenge an Air France crew already halfway down the runway.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

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.

After touching down, a Taiwanese commuter plane is rocked by a massive explosion, but investigators find no evidence of a bomb on board.

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

A freight train carrying an excess of cargo loses its brakes while descending a mountain causing it to gain speed and derail into a neighborhood killing several people.

Costa Diadema's seven-day cruise around the Mediterranean offers Italian delights to its passengers and challenges to its captain and crew.

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.

Sailing from Chile and Peru to Ecuador and Costa Rica, the luxurious Seven Seas Explorer cruise ship is full of marble, granite and almost 500 chandeliers.

The Carnival Vista is the new flagship for one of the world's largest cruise lines, carrying more than 4,600 passengers and boasting 10 restaurants, nearly 2,000 staterooms and a crew of 1,400.

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

A trip aboard one of the world's most expensive and sought-after train rides details the journey for both passengers and crew.

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

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.

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

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

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

The ORBIS McDonnell Douglas DC-10, the world's only flying eye-hospital, includes an operating room and a classroom.

South Africa's most luxurious train - Rovos Rail - travel from Pretoria to Cape Town in classic cars pulled by a series of steam, diesel and electric locomotives.

The Sky Princess carries passengers from Fort Lauderdale, Florida, to three Central American stops.

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

The highly-specialized North Rail Express container train travels from Narvik to Oslo, delivering cargo of fish as quickly as possible.

The prairies of Canada; the deserts of Australia; the cold of the Norwegian Arctic Circle; the steepest slopes of the mighty Swiss Alps.

Visit Stonehenge, kiss the Blarney Stone and hunt for Nessie on a magical tour of the British Isles, aboard Marina.

Facing Australia's fierce heat, Celebrity Solstice provides guests with views of waterfalls, jumping crocodiles, koalas and the Great Barrier Reef.

The Paul Gauguin offers five-star luxury while sailing near the coral reefs, mountainous islands and tropical playgrounds of French Polynesia.

New luxury liner Le Soleal navigates the uncharted waters of Indonesia to give her passengers one-of-a-kind encounters at exotic destinations.

On 4 November 2010, shortly after takeoff from Singapore, the number-two engine on Qantas Flight 32 partially disintegrates, causing serious damage to its left wing.

A British Airways flight to Australia in 1982 crashes into the Indian Ocean.

A design fault leads to an explosion on a DC-10 and two years later the same design fault causes another tragedy.

Air France Flight 296 fails to regain altitude after performing a fly-by during an air show at Mulhouse-Habsheim Airport.

A bomb explodes on Air India Flight 182 en route from Canada to India causing it to disintegrate over the coast of Ireland.

United Airlines Flight 718 and Trans World Airlines Flight 2 collide midair over the Grand Canyon in Arizona, killing all 128 people on both aircraft in 1956.

Polish Air Force Flight 101, carrying the President of Poland Lech Kaczynski, his wife Maria Kaczynska and other top officials, crashes in a wooded area while on final approach to Smolensk North Airport in heavy fog and low visibility.

Exploring the design and engineering stories behind D.C.'s Museum of African American History, the Montreal Tower and the Equinor building in Oslo.

Traveling from Canada to Belgium to the Southern U.S. to examine an eye-popping school, museum and railway station and reveal how they were built.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

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 new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

Visiting London's Gherkin, Seattle's Evergreen Point Floating Bridge and Lyon's Musée des Confluences to uncover how and why they were built.

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

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

A ride through Eastern Europe aboard heavy-hauling trains shows the logistical and mechanical challenges of making a multimillion-dollar cargo delivery.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

Mike in north eastern Australia, going on and under the water, into labs and onto construction projects working with specialized teams as they tackle the daunting challenge of saving dying coral on the incredible Great Barrier R.

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing. American 1572 hits a storm and loses both engines amid a tower shutdown. And crosswinds challenge an Air France crew already halfway down the runway.

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.

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 the most famous wooden warships over the course of 500 years.

The ships that made mighty empires, from the lone wolves that patrolled the high seas for imperial Britain to the USS Laffey's heroic WWII battle against kamikazes at Okinawa.

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 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.

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

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

Stories of espionage at sea, including deadly U-boat cat-and-mouse games during WWI, the sinking of the Lusitania, a gun-smuggling private yacht that made history, and liners turned troopships.

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

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.

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

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.

The history of the mean and ugly jet aircraft, the A-10 Warthog.

A look at how the C-47 evolved from passenger plane to a transport aircraft and flying hospital in WWII and years later as a gunship in Vietnam.

The fighter plane that helped turn the tide of World War II; the P-51 Mustang.

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

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.

During the Vietnam War, the United States needed a helicopter that could defend itself; the AH-1 Cobra, the world's first pure attack helicopter.

Electronic warfare aircraft; the EA-6B Prowler; the EA-18G Growler.

The history of the longest serving bomber in the U.S. military: the B-52 Stratofortress.

The 50-year evolution of the Army's top transport helicopter, the CH-47 Chinook.

Exploring the world's top close air support aircraft, which enter battles at a minute's notice.

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

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

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

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

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

An aerial tour of New York City, spanning the city's five boroughs, capturing man-made and natural wonders; revealing the ways its citizens live, work and play.

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

A high-flying tour of Pennsylvania.

An aerial tour of Florida's peninsula and panhandle celebrates the state's sights, unique history and lavish lifestyles.

Great mountain ranges; coal-based economy.

Louisiana's wetlands and underwater oil fields.

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

A flight over Northern California explores ancient forests, timeless coasts, golden cities and the region's pioneering spirit.

A flight over North and South Dakota reveals the shared history and the vast differences of these sibling states.

A soaring tour over Washington, D.C. explores the unique landscape, rich history and colorful story of the Nation's Capital.

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

A cross-country flight across America reveals the nation's most iconic industries, the people behind them and the stories of how they came to be.

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.

The Lone Star's rugged canyons, historic ranches and modern cities.

Northern state's green forests; red-painted barns and sugar maples.

A cross-country flight over icy landscapes in Alaska's Denali, vast wetlands in Florida's Everglades, and over 100 million acres of badlands, deserts, and mountains.

A coast-to-coast tour over America's man-made structures, old and new; the Statue of Liberty and the Golden Gate Bridge.

A cross-country flight over the nation's mountains, beaches and national parks; visiting other sites that attract adventurers and tourists.

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

A flight over Indiana explores the Hoosier State's rich agriculture, busy highways and basketball legends; exploring the War Memorial and the Angel Mounds of the southwest.

An aerial view of major cities in the United States, including Los Angeles, Miami, Chicago and Boston.

An aerial tour over Dallas and Fort Worth highlights the cities' differences while showcasing their shared contributions to the Texas narrative.

Mississippi from above; the state's unique beauty and history; mighty waters, ancient trails and the birth of the Delta Blues.

A soaring tour over Southern California explores the stunning beaches, vast deserts, sprawling city and unique culture.

A coast-to-coast tour over America's man-made structures, old and new; the Statue of Liberty and the Golden Gate Bridge.

A sky-high tour over Iowa explores its vast stretches of farmland, covered bridges and evolution from wilderness to statehood.

An aerial journey across Montana celebrates the Treasure State's adventure-filled history while showcasing its sprawling farms and rugged terrain.

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.

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.

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

A high-flying tour over Illinois; the Windy City, prairies and rivers; the state's dramatic history of great fires, crime and historic battles; Chicago's unique skyscrapers and the Lincoln Tomb.

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

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

Tour the Wisconsin State Capitol and Milwaukee City Hall, once the tallest building in the world.

The stories and sights of Hawaii's major islands.

A tour over two U.S. territories, Puerto Rico and the U.S. Virgin Islands.

A flying tour of Michigan's cultural landmarks, including Motown, the Great Lakes, the automobile industry and more.

A journey over America's western landscape featuring.

The South's famous landmarks, historical milestones and unique culture.

A coast-to-coast aerial tour celebrates the best small towns in the United States and tells stories about the men and women who called them home.

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

One of the most beautiful states on the Atlantic Coast.

Taking an aerial tour of Virginia.

Oregon's Cascade Mountains; Columbia River waterway.

An aerial view of Arkansas, where settlers' westward journeys began and the scene of Bonnie and Clyde's most serious crime; a view of the land of raging rivers, vast wilderness and legends of the Wild West.

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 view of New Mexico; exploring its landscapes and landmarks, while revealing its many legends and secrets.

A cross-country aerial journey over America's most majestic and unique roadside attractions.

An aerial tour over New England captures its beauty while celebrating its rich history; from the Massachusetts harbours, where Americans rebelled against the British, to the autumn colours that blanket the mountains of Vermont.

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

A flight over Missouri explores the Show Me State's towering monuments, mighty rivers and spectacular Ozarks.

The birthplace of the Star Spangled Banner; sites Harriet Tubman, Babe Ruth and the DuPont family made their marks on history.

America's most remarkable natural wonders are explored including the Grand Canyon, the Great Lakes and more.

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.

An aerial tour over Kentucky reveals a state of racetracks, country music highways, bourbon distilleries and a history of feuds and traditions.

A billion-dollar Stealth Bomber crashes at a U.S. Air Force base-the costliest aviation disaster ever. Bad data misleads a charter flight into a Portuguese mountain, and conflicting alarms send a cutting-edge jetliner plunging into the Atlantic.

Martinair 495 crashes on a rain-soaked runway in Portugal, showing how weather can doom a landing; American 1572 hits a storm and loses both engines amid a tower shutdown; crosswinds challenge an Air France crew already halfway down the runway.

Investigators hunt for answers when the pilots of three aircraft skip protocols, ignore their training and crash.

Mike joins crews as they build the world's longest railway tunnel in the Alps, fixing gridlock through the infamous Brenner Pass by drilling, blasting and digging their way through the mountains.

Investigators hunt for answers when the pilots of three aircraft skip protocols, ignore their training and crash.

Mike joins crews as they build the world's longest railway tunnel in the Alps, fixing gridlock through the infamous Brenner Pass by drilling, blasting and digging their way through the mountains.

Investigators hunt for answers when the pilots of three aircraft skip protocols, ignore their training and crash.

Mike joins crews as they build the world's longest railway tunnel in the Alps, fixing gridlock through the infamous Brenner Pass by drilling, blasting and digging their way through the mountains.

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

Three planes fatally out of balance force investigators to question every calculation; it's a flight risk that's entirely preventable, and yet repeated disasters reconfirm the need for critical backup systems.

The crash of a commuter flight to Detroit leads investigators to a cause the industry has known about for years.

Atlantic Airways Flight 670 careened off the runway and became engulfed in flames.