Extreme Ice Machines

When melting ice threatens to flood a town, a 22-ton amphibious mega machine battles the elements to save the day; in the Arctic, the Canadian Air Force relies on a massive transport aircraft to deliver supplies and personnel to far-off places.

Military search and rescue efforts in deadly arctic conditions rely on a specialized helicopter with unrivaled power and endurance, and special access reveals how it works; in the Alps, a monster snow blower keeps trains running in dangerous weather.

The world's only actual all-terrain vehicle is an arctic mega monster that can conquer land, snow and water; a machine that can climb mountains.

A helicopter made for extreme environments aids US Army rescue efforts in some of the most harsh conditions; a trio of small but capable tugboats moves cargo vessels through the busiest port of Alaska.

Tourists explore the far reaches of northern Canada and gain exclusive access to polar bears on custom-built rovers; the Twin Otter aircraft drops much-needed supplies to isolated villages.

The Yeti is a custom-made snow-eater that keeps a critical Alaskan airport open for business; experts reveal how cutting-edge engineering and the latest technology keep this machine running in the toughest conditions.

Experts use a cutting-edge, all-terrain engineering marvel to access a perilous job site covered in snow.

A special drone uses cutting-edge technology to fly deep into treacherous, hard-to-reach mountains on dangerous search and rescue missions, and a hi-tech ice machine works tirelessly at a Toronto airport to keep flights running in brutal conditions.