
An in-depth look at how things are repaired.

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

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.