The Singapore National Stadium is a gigantic multipurpose arena that all sits under the world's largest free-spanning dome; expert engineers reveal how this cutting-edge design marks the dawn of a new age in superstructure construction. 

The US military's most advanced hovercraft, Ship-to-Shore Connector (SSC), represents the next generation of amphibious transport vehicles; using the latest in cutting-edge tech, it's designed to carry the heaviest cargo into locations that were previously impossible to reach.