| 21. | The birth of signals intelligence in a modern sense dates to the Russo-Japanese War.
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| 22. | Following World War II, Friedman remained in government signals intelligence.
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| 23. | Cilluffo speculated that could be information about bugging techniques or about long-range signals intelligence.
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| 24. | Field signals intelligence was obtained, including bombing instructions and information from the " Fliegerkorps"
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| 25. | Their roles are to collect imagery intelligence, signals intelligence, and measurement and signature intelligence.
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| 26. | Additional independent signals intelligence also proved helpful in evaluating Schellenberg.
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| 27. | Signals intelligence encompasses both Electronic Intelligence ( Elint ) and Communications Intelligence ( Comint ).
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| 28. | Communication Command also operated the Canadian contribution to the Five Eyes ECHELON signal intelligence network.
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| 29. | The aircraft also possesses signal intelligence and C3I capabilities.
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| 30. | Together they made up the fledgling Signal Intelligence Service.
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