The U.S. military is evaluating Croquet for training radio technicians to build field communications systems in virtual terrain replicating the landscape in Iraq.

FORBES: Croquet, Everyone?

Using these, a pilot can view full-color terrain maps and virtual images of the landscape around them on displays that adjust as they move their heads.

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Virtual World allows users to swoop into an exact replica of the real world's terrain from any angle.

ECONOMIST: What the surgeon saw . . .