

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

A lone bush pilot races to stock ultra-marathon checkpoints; a heli pilot risks a sling-load at 4,000 feet and comes inches from disaster; a vintage DC-3 plane is a village's only lifeline as a storm closes in.

Witness wild weather, emergency landings, and animal invaders at Ted Stevens International Airport in Anchorage, Alaska, one of the world's busiest cargo airports.

At ITER in southern France, teams move massive reactor components, repair a leaking cryostat and test giant robotic arms as they build the world's largest fusion experiment with extraordinary precision.

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.

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

The investigation into the 2014 crash of a TransAsia flight uncovers a systemic problem with the airline.

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.