From Popular Science:
Jarheads work almost 50 percent faster wearing heads-up display goggles that replace technical manuals.
New augmented reality goggles are helping Marine mechanics perform maintenance on vehicles in about half the usual time. The futuristic headgear displays precise instructions on top of real-world settings, and shows how to complete certain tasks, such as wiring up an ignition coil.
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My Comment: Something tells me that this headgear must cost a fortune.