
An in-depth look at how things are repaired.

Mike Davidson heads to Brazil, where an offshore crew is racing the clock to set up giant power ships to deliver electricity to a country in desperate need.

Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains.

A ride on the Panama Canal Railway reveals the track repairs, engine overhauls and dangerous searches involved in keeping vital freight runs rolling.

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