National Technical Means
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National Technical Means (NTM) is a euphemism for intelligence collection by reconnaissance satellites. It is normally used in reference to the activities of the United States National Reconnaissance Office. It may involve imagery intelligence, signals intelligence, electronic intelligence, or other forms, such as space-based radar. The term is often found in arms control treaties, as a method of verifying (under the "Trust but Verify" paradigm) programs such as SALT and START.