In California, brave technicians work at extreme heights to keep a tramway safe for tourists. Crews race against the clock to replace a corroded rail at the Montreal Metro.
In the Netherlands, engineers battle encroaching seawater on storm surge barriers that protect the country from deadly floods. Divers risk their lives to save a flood-ravaged community near Montreal.
Crews wage a battle against moisture at the world's only rotating boat-lift; the Falkirk Wheel. In Blackpool, UK, technicians must fix a roller coaster's broken track before opening.
In Niagara Falls, engineers struggle to solve a critical issue with a faulty power-generating unit before its too late. 45 stories above the shimmering Las Vegas strip, courageous lighting technicians put their lives on the line to perform a risky neon bulb replacement while facing extreme desert conditions.
In Oregon, specialized divers risk potentially fatal nitrogen poisoning attempting to remove contaminates from a drinking water system. Crews ascend to dizzying heights to upgrade a communications tower keeping Atlantic Canada connected.
Off Canada's east coast, technicians battle the elements to keep the country's longest bridge open. Specialists work in claustrophobic conditions to keep massive wind turbines rotating in Alberta.
As forest fires rage in Northern Manitoba, aircraft engineers at a remote airstrip struggle to keep water bombers flying. Mechanics race the clock to make helicopters safe to fly workers to offshore platforms in the Gulf of Mexico.
A committed crew of mariners race against time as they dredge the bottom of the St. Lawrence River. A crew in the Canadian Maritimes overhauls a passenger ferry before it becomes unsafe.
