
An in-depth look at how things are repaired.

In Southern California, crews rebuild after the 2025 wildfires, cutting firebreaks, repairing emergency water systems, hardening roads and power lines and building fire-resistant homes before the next firestorm.

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 vessels that the U.S. Coast Guard use to keep the oceans safe; he replaces key parts of ship engines, removes a large crane from a buoy tender, and fixes a helicopter for a critical exercise.