

A crew and its massive air crane helicopter haul millions of pounds of timber while battling the elements and handling emergency repairs.

Mike is in Iceland, where teams harness the power of volcanos to keep the geothermal energy flowing; they battle harsh weather to maintain and upgrade giant power systems, fixing miles of steam pipes, and bringing a dead well back to life.

In Florida, Mike tackles one of the dangerous jobs on the planet, commercial diving; he helps a specialized team keep waterways safe; fixing construction site leaks and removing dangerous structures, all while hurricane season is in full swing.

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 accessible.

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.

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.

A Colorado commuter flight crashes five miles short of the runway and the reasons why rock the airline industry.

Pilots attempt to land their Boeing 737 in an Indonesian river after losing their engines and electrical power.