

A plane with members of the Manchester United football team crashes while heading home from Yugoslavia, killing 23 aboard.

On 28 December 1978, the crew of United Airlines Flight 173 are preoccupied with a landing gear problem as the aircraft circles in a holding pattern in the vicinity of Portland, Oregon; it runs out of fuel and crashes in a sparsely populated area.

A team of experts investigates in detail the carnage of a cargo plane; an anonymous tip helps explain why a cargo plane crashed just moments after taking off from Miami.

At Cirque du Soleil in Las Vegas, Mike embeds with the talented teams that maintain the amazing machines behind Cirque du Soleil's stage shows.

A ride through Eastern Europe aboard heavy-hauling trains shows the logistical and mechanical challenges of making a multimillion-dollar cargo delivery.

Mike Davidson goes to the biggest automated package sorting facility in the world, UPS Worldport in Louisville, Kentucky; two million packages go through here every day.

Mike helps fix the machines that keep one of the United States' biggest ports moving; he assists a team in moving a 3-million pound crane.

At the Panama Canal, crews repair dam and lock gates, dredge the Culebra Cut, maintain electric mules and restore the watershed while battling drought, erosion and rising salinity.