The staff and technology that keep major transport infrastructures running smoothly, beginning at Atlanta Airport, which handles 2,700 arrivals and departures every day
Behind the scenes at New York's Grand Central Terminal, which is used by more than 130,000 train passengers every day.
Exploring the technical and logistical challenges faced by backstage crews and staff working on the Cirque du Soleil show O, which features a variety of acrobatic feats and stunts