A fascinating article about a visit to the U.S. Army National Training Center:
Fort Irwin is a U.S. army base nearly the size of Rhode Island, located in the Mojave Desert about an hour's drive northeast of Barstow, California. There you will find the National Training Center, or NTC, at which all U.S. troops, from all the services, spend a twenty-one day rotation before they deploy overseas...
Units are deployed to Fort Irwin for twenty-one days, fourteen of which are spent in what Fort Irwin refers to as "The Box" (as in "sandbox"). This is the vast desert training area that includes fifteen simulated towns and the previously mentioned tunnel and caves, as well as expansive gunnery ranges and tank battle arenas.
Following our briefing, we headed out to the largest mock village in the complex, the Afghan town of Ertebat Shar, originally known, during its Iraqi incarnation, as Medina Wasl.
Lots of amazing photos, plus a description of one of the realistic training exercises:
The afternoon's action began quietly enough, with an American soldier on patrol waving off a man trying to sell him a melon. Suddenly, a truck bomb detonated, smoke filled the air, and an injured woman began to wail, while a soldier slumped against a wall, applying a tourniquet to his own severed arm.
In the subsequent chaos, it was hard to tell who was doing what, and why...
A friend who's associated with the State department noted that they have similar, though smaller, training facilities.