Long Endurance Multi-INT Vehicle: Floating sentinel From PopSci.com:
Military aircraft is designed to stay aloft for weeks at a time.
Since the airship glory days of the early part of the century, blimps have certainly lost some of their cachet, relegated to hovering over sporting events and not much else. However, the Army is about to test launch an unmanned hybrid airship to be used for surveillance missions in Afghanistan.
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