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

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

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

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.

Norwegian Joy sails amid icebergs in Alaska's Inside Passage, treating guests to glaciers, humpback whales, and the largest zip line in the world.

A museum building bends 1,100-glass tubes to form a facade and tunnels below the water table; a vast 11-storey glass atrium HQ is built on the former Berlin Wall site to represent unity.

The American Museum of Natural History in NYC gets a cave-like extension; an arts center inspired by migrating birds is built on a lake in China; Boston University gains a fossil-free, Jenga-like tower.

A 1.2-million-square-foot office building balances precariously on a 39-foot wide base in Chicago; a building named Pterodactyl lands on top of a Los Angeles parking garage; the world's longest suspension footbridge.

Examine the sightlines in Los Angeles's SoFi Stadium, which sits right in the flight path of LAX; celebrate the ingenuity of the inexperienced crew that built a monumental skyscraper in Malta; visit a forest tower designed for testing elevators.

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.

A sculptural high-rise with rippling balconies breaks the mold in Chicago; Mammoth machines bore 26 miles of tunnels for an underground railroad beneath London's city streets.

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.

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.

Host Mike Davidson goes to the remote Atacama desert in Chile; at observatory ALMA he works alongside the expert team as they repair some of the world's biggest antennas.

Mike works with the U.S. Army in Germany inside the massive fix facility The MAK, Maintenance Activity Kaiserslautern, as teams repair over one hundred Bradley fighting vehicles, then embeds with troops in a massive two week long battle exercise.

Visiting Australia's One Central Park, the Oslo Opera House and the California Academy of Sciences in San Francisco to reveal their architectural secrets.

An unstable high rise, an otherworldly museum, and a towering cliffside elevator.

A 284ft wooden skyscraper built from 1,200 bespoke pieces tests fire safety limits in Milwaukee; a decaying Amsterdam crane track transforms into glass offices; a needle-thin tower stacks 28 apartments onto a 21ft-wide plot in Melbourne, Australia.

Paying tribute to the brave, gravity-defying design of the U.S. National Medal of Honor Museum; traveling to Singapore for a look at a leaning tower of gambling, then exploring a New York City office building that lets the sun shine through.

Celebrating one of humanities biggest engineering achievements, the International Space Station, a meteor proof lab bigger than a football field, constructed by astronauts traveling 250 miles above us at 17,500 miles an hour.

A 1966 landslide in Wales killed 116 children and 28 adults, and a 2019 dam collapse killed 115 people in Brazil.

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

A look at the fate of United Airlines Flight 232 which crashed into Sioux City's runway in 1989; it caused a subsequent explosion that left 111 people dead.

Seeing how international investigative teams must overcome differences to solve controversial plane crashes.

Investigating the 2009 crash of Colgan Air Flight 3407; the plane stalls at low altitude and dives into a residential area near Buffalo, N.Y.

Moments after takeoff, a plane sustains electrical failures and crashes in the Florida Everglades, killing 110 people on board.

Investigators struggle to determine why a 757 strayed off course during its final approach to a Colombia airport and crashed into a mountain.

When a British tycoon and his family die in a 2017 Australian seaplane crash, investigators spend over two years searching for the reason behind the tragedy.

A plane carrying Mexico's interior minister crashes into Mexico City's financial district.

The 200-year evolution of the submarine in wartime is examined, told by the designers and engineers behind the machines.

An up-close look at the naval carriers, destroyers, and nuclear submarines of the Cold War.

Stories of historic Black struggle for equality in maritime combat; an enslaved powder boy who served during the French and Indian War; a Civil War gunner; the first African American to command a vessel with a fully integrated crew: Hugh Mulzac.

A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

A look at key naval battles that have taken place in the Persian Gulf over the last 50 years and the warships involved, from both sides of the conflicts.

A look at the smallest ships of war and the major roles they've played over the centuries, including the 1776 gunboat built to stop a British invasion and the HA-19 sub.

New high-tech investigations uncover what sunk a World War I cruiser, a World War II submarine, a British destroyer from the Falklands War, and more.

A look at how navy weapons have evolved over the centuries, from cannons to gun turrets to nuclear missiles and beyond.

Exploring maritime heroes who left their mark on history through their bravery and skill, including Larry Chambers, Ernest Evans, and Robert Smalls.

A look at riverine warfare from the Civil War to Vietnam and small but powerful combat ships.

The inside story of the massive military transport aircraft, the C-17.

The history and evolution of America's most legendary spy plane.

The history of the F-16 Fighting Falcon and how it became the U.S. Air Force's most versatile plane.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

The inside story of the F-4 Phantom, the U.S. military's go-to fighter for more than four decades.

The world's most versatile and powerful helicopters, including the Huey that served as a rescue helicopter in Vietnam, and the Apache attack helicopter.

An inside look at the U.S. Air Force's largest aircraft, the C-5 Galaxy; its most dramatic combat and peacetime missions over the last 50 years.

The Vietnam-era OV-10 Bronco is pulled out of retirement to join the fight against ISIS.

The history of the Russian MiG, American air power's fiercest rival for more than 50 years.

Considered the deadliest fighter of WWII, Germany's Me-109s were feared by Allied bombers and fighters alike; 109s fought Spitfires in the Battle of Britain and alongside Rommel in North Africa.

The most-produced bomber in US history, used during World War II by every branch of the American military, as well as by the Royal Air Force.

A look at the amphibious aircraft and the many roles it served during WWII, from patrol bomber to search-and-rescue aircraft.

A look at the British multirole fighter aircraft; the de Havilland Mosquito was used in the Second World War as a bomber, fighter and reconnaissance aircraft.

The overlooked underdog of British fighter planes; fast and versatile, the dogfighter doubled as a bomber and ground support aircraft in every theatre of WWII.

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 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.

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.

Three devastating crashes make front-page news around the globe; the media frenzy puts intense pressure on investigators to uncover the causes.

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

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.

Within five minutes of takeoff, the Dominican Republic bound Birgenair Flight 301 crashes into the Atlantic Ocean; a series of confusing signals crashes the plane.

The consequences are disastrous when ice forms on an airplane's wings; three planes are brought down by ice, and it's up to investigators to determine how modern aircraft could possibly end up with frozen wings.

A crew argues with no runway in sight; a captain ignores a critical signal; an exhausted pilot picks a catastrophic time to try a new approach.

When a 737 careens off the runway in Indonesia, investigators uncover a shocking explanation for the crash.

A look at the fatal consequences that can occur when a fire breaks out on a plane; three flights that erupted in flames and the investigations that changed aviation forever.

On July 11, 1991, the crew of Nigeria Airways Flight 2120 unsuccessfully tries to return to the airport after a burst tire creates an in-flight fire which causes 247 Nigerian pilgrims and 14 crew to perish.

When the crash of a commuter plane in Georgia kills a NASA astronaut, a four-term U.S. senator and 21 others, the disaster grabs headlines around the world.

A 1966 landslide in Wales killed 116 children and 28 adults, and a 2019 dam collapse killed 115 people in Brazil.

Confused, flying blind and lost in the dark, three crews lose sight of the horizon and fall into the same deadly trap.

Three flights end in tragedy after miscommunication mix-ups and personality clases; Investigators try to unravel what went wrong.

Investigators face a mystery when Varig Flight 254 disappears without a trace over the jungles of Brazil.

Airplane crashes involving high-profile passengers put added pressure on investigators.

A Boeing 737 leaving Panama City crashes into one of the most remote and treacherous jungles on the planet.

A bomb explodes on Pan Am Flight 103, causing the aircraft to disintegrate in midair and the wreckage of the aircraft to crash into the Scottish town of Lockerbie, killing all 259 people on board and 11 people on the ground.

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.

Beauty of the Empire State; Central Park; tallest skyscrapers; mighty rivers; 17th century explorer Henry Hudson.

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

The stories and sights of Hawaii's major islands.

Great mountain ranges; coal-based economy.

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

One of the most beautiful states on the Atlantic Coast.

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

Bettany Hughes explores Rome's defeat of the mighty Carthage at the Battle of Zama, which marked the end of Carthage's hold over the western Mediterranean and the downfall of the great army led by Carthaginian general Hannibal.

Bettany Hughes looks at the day Spartacus broke out of gladiator school and started the most terrifying slave revolt in Roman history; Hughes examines the realities of slavery in ancient Rome and how Sparacus' exploits attracted a mass following.

Bettany Hughes revisits the iconic moment when Julius Caesar led his army across the River Rubicon, ignoring the orders of the Roman Senate and effectively declaring war on his rivals in Rome; Hughes analyzes Caesar's character and health.

Bettany Hughes tells the story of Octavian's rise to power by looking at the day he stole the will of political rival Marc Antony; evidence of Antony's devotion to Cleopatra undermines Antony's popularity and paves Octavian's path to power.

Bettany Hughes turns her focus to the day when Roman troops invaded Boudica's settlement in East Anglia, provoking the disgraced Iceni queen into a revolution that threatened the Roman occupation of Britannia.

Nero takes his own life as troops come to arrest him for crimes against the state; Bettany Hughes reveals how Nero's early reign was dominated by his mother, Agrippina, while exploring a new theory that his mood was undermined by a serious illness.

Bettany Hughes relives opening day at Rome's Colosseum in 80 AD; the lavish arena is a giant new landmark for the world's greatest city where people can revel in bloodthirsty entertainments.

Bettany Hughes looks at the day which marked Rome's symbolic break with its 1,000-year pagan past, the moment in 337 AD when Emperor Constantine the Great was baptized as a Christian; Hughes shows monuments combining Christian and pagan imagery.

The cockpit window of an Airbus A319 explodes; pilots miraculously land the out-of-control plane; investigators must determine how the freshly serviced aircraft was released with a fatal flaw.

Investigators must figure out why the safety systems of a turboprop plane failed to prevent a crash into an Indonesian mountain.

A look at the commercial flights that ended in disaster because of suspected murder-suicide.

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.

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

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

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.

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

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

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.

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

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

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

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

When John F. Kennedy Jr.'s Piper Saratoga crashed in 1999, the NTSB faces big pressure to find the wreckage and the cause.

A 1966 landslide in Wales killed 116 children and 28 adults, and a 2019 dam collapse killed 115 people in Brazil.

Experts examine what caused the Zeebrugge ferry tragedy and the Costa Concordia cruise ship disaster; what were the consequences, and how could they have been avoided?

Pilots aboard a hijacked plane are forced to attempt an emergency landing at sea.

Experts examine what caused the Zeebrugge ferry tragedy and the Costa Concordia cruise ship disaster; what were the consequences, and how could they have been avoided?

When an Illinois turboprop crashes after losing battery power, investigators uncover a series of errors made by the pilots.

Experts examine what caused the Zeebrugge ferry tragedy and the Costa Concordia cruise ship disaster; what were the consequences, and how could they have been avoided?

Experts investigate the West Air Sweden Flight 294 crash and how the cargo jet nosedived into the Swedish Arctic at speeds nearing 600 mph.

When a Bulgarian airliner is taken over by violent hijackers, the crew and authorities on the ground devise a daring plan to save the airliner.

From pilot error to meltdowns within air traffic control, investigators dig deep into three mid-air collisions that seem to defy logic.

A passenger ferry sinks after crashing into rocks off the coast of a Greek island, killing 82; it leads to a shocking investigation.

Investigators try to figure out why a private Learjet carrying Payne Stewart went rogue before crashing in a South Dakota hayfield.

A runway collision at a small airport turns tragic when passengers cannot escape the burning aircraft.

Three flights ending in tragedy, prove that minor missteps during takeoff can have disastrous consequences.

Investigators struggle to determine why a 757 strayed off course during its final approach to a Colombia airport and crashed into a mountain.

Experts investigate an unfortunate string of events that caused the freshly serviced Air Astana Flight 1388 to become completely uncontrollable.

Three last-resort water landings, all handled differently yet each one crucial to improving the outcomes of ditching on open water.

A trio of crashes reveals that when the nuts and bolts of maintenance go unchecked, it can spell catastrophe.

When a commercial airliner goes down in eastern Ukraine in 2014, examiners must conduct an investigation in the middle of a war zone.

A miraculous rescue is launched after a 747 plummets toward the Pacific.

Two identical plane crashes involving the same icy conditions and the same plane design are examined, revealing why neither disaster should have happened.

An MD-82 crash lands in Arkansas during a severe thunderstorm; but investigators believe weather is not the main reason for the accident.

Partnair Flight 394 loses control, breaks up in mid-air and crashes into the North Sea; the aircraft's vertical stabilizer vibrates loose during flight due to excessive wear on substandard bolts, sleeves and pins that have been illegally sold.

Experts examine what caused the Zeebrugge ferry tragedy and the Costa Concordia cruise ship disaster; what were the consequences, and how could they have been avoided?

Napoleon's disastrous defeat at Waterloo; failed strategies and human dramas.

A comprehensive look at the events leading up to the Battle of the Little Bighorn as well as the myths and legends it spawned, and its impact on history.

On D-Day, Allied forces land in Normandy, France, to beat back the German troops and liberate France; previously unseen archival footage captures the 85-day struggle to liberate Europe and includes rare images of the battle itself.

Footage of the Pacific campaign during World War II and Japan's downfall.

It is considered the largest sea battle in history: the Battle of Leyte Gulf in WWII was three days of ingenious strategy and white-knuckle combat between warships, aircraft and kamikazes.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

Examining some of maritime history's most effective lightning strikes; how the French frigate Nivôse set a trap to lure Somali pirates; how the HMS Illustrious captured a well-defended Mediterranean harbor in WWII; a surprise attack on Tokyo in 1942.

A 1994 terrorist bombing aboard Philippine Airlines Flight 434 forces its pilots into a daring emergency landing.

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

A Korean Airlines passenger plane is shot down by a Soviet fighter jet in 1983; political tensions nearly escalate into war.

Fifteen minutes after taking off from Puerto Vallarta for San Francisco, the pilots of an MD-83 realize something is very wrong with their plane.

An Air Inter flight crashes into the Vosges Mountains while attempting to land killing most of the 96 passengers.

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.

Cruise among the icebergs of Greenland and the Canadian High Arctic aboard the expedition cruiser Ocean Endeavour.

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

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

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

Passengers are treated like royalty on Indian Railways' Maharaja's Express.

Norway's Bergen Line stretches from Oslo to Bergen, passing through 182 tunnels; Nordland Line transports passengers and freight; Flam Railway boasts one of the steepest railway climbs on Earth.

Exploring Vietnam by rail aboard the Reunification Express; a three-day ride from Hanoi to Ho Chi Minh City rich in views of rivers, rice paddies and dragon fruit orchards; steeped in the nation's war-torn past.

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.

Follow mega cruiser Regal Princess as she whisks guests to Germany, Russia, and Scandinavia in style.

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.

The Blue Angels run through their unique, specialized training.

The Indian Pacific is a four-day, 4,352-kilometre transcontinental journey across Australia, a trip which features the world's longest straight stretch of railway and steepest incline.

A crew of 2,200 on the Symphony of the Seas tends to more than 5,500 passengers as they sail to ports in Spain, France and Italy.

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

Go behind the scenes with NTV's two Italo trains - the AGV and the EVO - as they expand to cover more of the Italian railway network, connecting passengers from Turin to Venice, and Naples to Milan, on two of the world's fastest trains.

The White Pass and Yukon route was built in 1869 to take miners and supplies to the Klondike gold fields.

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.

On inadequate foundations, San Francisco's MOMA triples in size creating an exterior light enough to prevent collapse; a 1970s Sydney skyscraper is recycled into a 21st century tower; in Dallas, a five acre park is created.

A London railway station; giant Singapore biodomes; eye-catching hospital in Las Vegas.

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

Exploring behind-the-scenes of design and construction of revolutionary buildings in Spain, New York and a university campus in Florida.

A Manhattan high-rise; an Athens cultural center; a Singapore university.

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

Mike works with the Army Corps of Engineers on a massive project to restore essential flow of fresh water to the Florida Everglades. He also joins scientists, python hunters and the Miccosuke Tribe to eliminate invasive species.

At Cirque Du Soileil in Las Vegas, Mike embeds with the talented teams that maintain the amazing machines behind Cirque Du Soleil's stage shows.

Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down.

Mike helps fix the vessels that the U.S. Coast Guard use to keep the oceans safe; he replaces key parts of ship engines, removes a large crane from a buoy tender, and fixes a helicopter for a critical exercise.

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.

Experts examine what caused the Zeebrugge ferry tragedy and the Costa Concordia cruise ship disaster; what were the consequences, and how could they have been avoided?

On 20 August 2011, First Air Flight 6560, a charter flight, crashes near its destination of Resolute Bay Airport, Resolute, Nunavut, Canada, in poor weather conditions; out of the fifteen passengers and crew members, only three survived.

A look at accidents and incidents where problems with the interface between crew members and onboard avionics are a factor, and the causes of those problems.

Midair tragedies are particularly horrifying when they occur over a community, and rain terror on the people below.

When a cargo plane crashes at a U.S. airfield in Afghanistan, investigators reach a conclusion that ultimately proves incorrect.

When a commuter turboprop plane crashes at an Irish airport, investigators uncover a startling gap in aviation safety.

Alaska Airlines 261 nosedives into the Pacific leaving investigators stumped . A rare storm and a deadly design flaw intersect cause American Eagle 4184 to fall from the sky. And, investigators suspect a fatal flaw in the Boeing 737.

When basketball legend Kobe Bryant is killed in a helicopter crash in Calabasas, investigators examine the data, the wreckage, and the pilot's actions for clues.

A design flaw sends American Eagle Flight 41-84 smashing into a cornfield outside of Chicago, killing all 68 people on board.

Recounting some of maritime warfare's explosions, from world wars and Vietnam to the nuclear tests at Bikini Atoll.

The story of one of the world's most effective war machines: the Viking longship, seeing how its design evolved from swift war canoe to versatile and feared ship that would change the course of history.

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.

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.

An inside look at the Panavia Tornado's evolution from a Cold War low-level bomber to a high-level fighter-interceptor.

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 naval fighter designed to counter the Japanese Zero turns the tide of the war in the Pacific.

The true story of the F-14 Tomcat, the military aircraft made famous in "Top Gun"; how it served as the US Navy's top carrier fighter for a generation.

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.

The Marine Corps' V-22 Osprey.

The F-15 Eagle's conquests in Iraq, Yugoslavia and even space.

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.

Taking an aerial tour of Virginia.

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.

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

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

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.

Pilots of Southern Airways Flight 242 must try to land on a Georgia highway after the engines die and the windshield shatters.

Chalk's Ocean Airways flight 101 crashes just after take-off from Watson Island in Miami on December 19, 2005, killing 20 people.

British Midland Flight 92 slams into Britain's busy M1 motorway, and it seems like a rare case of dual engine failure, but investigators learn the real cause was a tragic misunderstanding.

When critical instruments in the cockpit can't be trusted, the consequences can be fatal.

A propeller breaks off and rips a hole in the fuselage of an aircraft en route from Alaska to Washington 19,000 feet over the Pacific Ocean.

On 12 November 2001, just two months after the September 11 attacks, American Airlines Flight 587 spirals out of control shortly after taking off from John F. Kennedy Airport and crashes into Queens.

On 31 October 2000, Singapore Airlines Flight 006 collides with construction equipment at Chiang Kai Shek airport in Taipei while attempting to take off on the wrong runway in a typhoon, killing 83 of the 179 people on board.