EpisodeInfo.com TV Show info and pictures

It is a majestic structure that rises boldly over the Mississippi River–40,000 tons of steel and concrete that create the biggest arch of its kind in the world. Nothing like it had ever been built before, nor attempted since. We’ll see how its simple and elegant form results from remarkable achievements in construction and engineering.

Discover how military and police personnel, as well as private citizens, hone their shooting skills with one of the oldest of training techniques when we review the history of firing ranges–from a simple knot on a tree, old bottles, rusted tin cans, and highway signs to high-tech targets and advances in weaponry.

Modern Marvels looks at Glass