Pacific Vortex: gold depositry at Fort Knox and more

pg 222

"...they'd run into more detection and warning gear than surrounded the gold depository at Fort Knox."
There are actually 3 Fort Knox's. There's one in Kentucky and one in Maine. The one that has the gold bullion is adjacent to but not part of the one in Kentucky:

The United States Bullion Depository, often known as Fort Knox, is a fortified vault building located adjacent to Fort Knox, Kentucky, used to store a large portion of United States official gold reserves and occasionally other precious items belonging or entrusted to the federal government.
The United States Bullion Depository holds 4,577 metric tons (5046 tons) of gold bullion (147.2 million oz. troy). This is roughly 2.5% of all the gold ever refined throughout human history. Even so, the depository is second in the United States to the Federal Reserve Bank of New York's underground vault in Manhattan, which holds 7,000 metric tons (7716 tons) of gold bullion (225.1 million oz. troy), some of it in trust for foreign nations, central banks and official international organizations.

"It's a Russian ZZK Kaleshrev."

No such weapon exists.

"God, how all the buccaneers of the Spanish Main would have envied your organization."

In the days of the Spanish New World Empire, the mainland of the American continent enclosing the Caribbean Sea and the Gulf of Mexico was referred to as the Spanish Main.

Concept 
 It included present-day Florida, the western shore of the Gulf of Mexico in Texas and Mexico, Central America and the north coast of South America. In particular, the term is most strongly associated with that stretch of the Caribbean coastline that runs from the ports of Porto Bello on the Isthmus of Darien in Panama, through Cartagena de Indias in New Granada, and Maracaibo to the Orinoco delta. Veracruz in New Spain was another major port.

Resources
From the 16th to the early 19th century, the Spanish Main was the point of departure for enormous wealth that was shipped back to Spain in the form of gold, silver, gems, spices, hardwoods, hides and other riches. Silver in the form of pieces of eight was brought to the Spanish Main by llama and mule train from Potosí via the Pacific coast, while wares from the Far East, that had arrived at Acapulco on the Manila Galleons, were also then transported overland to the Spanish Main.

From there they were shipped to Spain by Spanish treasure fleets. Due to the tremendous riches which were shipped from it, the Spanish Main was ripe territory for pirates and privateers.