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| I'd like to pay this in, please http://genericvardenafil.in.net/ generic levitra online At first blush the helmet-mounted display struck Charlie and his colleagues as a major advance. But they were left with a nagging question: what happens if something goes wrong with the helmet? The answer: without a HUD as a fail-safe, pilots would have to fly and fight using the plane’s conventional heads-down displays. |
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