One hundred billion dollars in bullion. Monster money-making machines, impenetrable subterranean vaults. An army of protectors. All supporting the world's most powerful economy. Explore the heart of "In God We Trust," the elaborate systems of design and protection at the US Treasury premier currency manufacturer and her sister operation, the Bureau of Engraving and Printing. Join us as we unlock the secrets inside the steel vaults. (thetvdb.com)