Blair,a retired U.S.Navy admiral who has been in his job about two months, covered a wide range of topics during a lengthy session with reporters at DNI headquarters just outside Washington.

VOA: standard.2009.03.26

The team expects that future, smaller designs will work at ultrasonic frequencies outside the range of human hearing.

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With 50-to-100 hours of endurance per sortie, the system can conduct broad-area persistent surveillance-attack operations from outside the range of enemy missile threats.

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Go outside that range however and there will be some wear.

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