Smithsonian HD Network Personal accounts of the atomic attack on Hiroshima in 1945; the comprehensive story of the bombing of Hiroshima, from those who built it, dropped it, and survived it. 2026-08-09 Recently declassified U.S. government documents reveal hidden secrets about the nuclear arms race. 2026-08-09 An inside look at the Manned Orbiting Laboratory, a top-secret military spy station developed during the Cold War. 2026-08-09 During the Cold War, the U.S. government partners with Hollywood to create films for scientific research, military training and propaganda. 2026-08-09 Personal accounts of the atomic attack on Hiroshima in 1945; the comprehensive story of the bombing of Hiroshima, from those who built it, dropped it, and survived it. 2026-08-09 When a DC-8 cargo jet crashes on approach to a U.S. naval base in Guantánamo, investigators wonder if Cuba played a role. 2026-08-09 Facing a cascade of failures and a fire on board, a turboprop is just seconds from landing when it flips over and crashes. 2026-08-09 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. 2026-08-09 On 1 June 2009, Air France Flight 447 stalls and crashes into the Atlantic Ocean while flying through a thunderstorm, killing all 228 people on board. 2026-08-09 The captain of a Navy cruiser must quickly determine if an approaching plane is friendly. 2026-08-09 An aerial journey across Montana celebrates the Treasure State's adventure-filled history while showcasing its sprawling farms and rugged terrain. 2026-08-09 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. 2026-08-09 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. 2026-08-09 An aerial journey over Ohio showcases the Buckeye State's autumnal vistas, majestic rivers, epic skyscrapers and battlegrounds. 2026-08-09 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. 2026-08-09 Home to some of America's highest mountains; Mount St. Helens. 2026-08-09 An aerial tour over America's Great Plains tracks the prairies, farms, oilfields and wildlife. 2026-08-09 Vast cotton fields, Gulf coast beaches; famous Civil Rights marches; NASCAR's most dangerous track; steel factories. 2026-08-09 White sand beaches; Blue Ridge Mountains; Charleston's Rainbow Row. 2026-08-09 A cross-country aerial journey over America's most majestic and unique roadside attractions. 2026-08-09 An aerial tour over New England captures its beauty while celebrating its rich history; from the Massachusetts harbors, where Americans rebelled against the British, to the autumn colors that blanket the mountains of Vermont. 2026-08-09 The Empire State of the South; ancient Mound builders to the Cherokee Indians. 2026-08-09 In a rush to complete their flights, three different flight crews skip key procedures, ignore signs of danger and make deadly decisions. 2026-08-09 The pairing of a domineering pilot and an inexperienced first officer has deadly consequences in northern Minnesota. 2026-08-09 After a Chinese airplane lands at a top-secret US Air Force base, the search is on for the cause of a deadly rollercoaster ride in the sky. 2026-08-10 In September 2006, a brand-new legacy business jet collides with a Boeing 737 over the Amazon forest. 2026-08-10 After a Chinese airplane lands at a top-secret US Air Force base, the search is on for the cause of a deadly rollercoaster ride in the sky. 2026-08-10 Design innovations evolve as a result of terrible air disasters due to pressurization failure or explosive decompression. 2026-08-10 After a Chinese airplane lands at a top-secret US Air Force base, the search is on for the cause of a deadly rollercoaster ride in the sky. 2026-08-10 The crash of a commuter flight to Detroit leads investigators to a cause the industry has known about for years. 2026-08-10 Atlantic Airways Flight 670 careened off the runway and became engulfed in flames. 2026-08-10 Devastating failures in the air put pilots to the test and shine a light on three feats of flying. 2026-08-10 When an A300 stalls and crashes just before landing in Japan, fears arise about the plane's complex automated systems. 2026-08-10 On 26 May 1991, the thrust reverser on the number one engine of Lauda Air Flight 004 deploys in flight without being commanded, causing the aircraft to spiral out of control, disintegrate, and crash about 100 miles northwest of Bangkok. 2026-08-10 Flydubai Flight 981 enters a rapid descent and crashes nose-first at Rostov-on-Don Airport in Rostov-on-Don, Russia, after aborting its second landing attempt in poor weather conditions. 2026-08-10 Moments before Pacific Southwest Flight 1771 crashes on a cattle ranch in California, gunshots are heard in the cabin. 2026-08-10 When a twin-engine jet careens off the runway in Kentucky, investigators must determine why the plane failed to take off. 2026-08-10 In 1991, a Boeing 737 operating as United Airlines Flight 585 suddenly rolls into a dive and crashes within eight seconds, killing all 25 people on board. 2026-08-10 When Germanwings Flight 9525 crashes in the French Alps, investigators discover shocking truths about the co-pilot's mental health. 2026-08-10 On 27 November 2008, an aircraft on a post-maintenance test flight operating as XL Airways Germany Flight 888T stalls and crashes into the Mediterranean Sea off the coast of France, killing all seven people on board. 2026-08-10 On August 22nd, 1985, 55 people died aboard British Airtours flight 28M when its engine caught fire as it accelerated. 2026-08-10 Investigators struggle to understand the unusual flight path and Himalayan crash site of Thai Airways Flight 311. 2026-08-10 A helicopter carrying oil workers to an offshore drilling platform crashes. 2026-08-10 Mistaken identity and hostile fire over enemy territory are among the many risks that pilots face in war zones around the world. 2026-08-10 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. 2026-08-10 The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo. 2026-08-10 An unstable high rise, an otherworldly museum, and a towering cliffside elevator. 2026-08-10 Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created. 2026-08-10 Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge. 2026-08-11