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passive air defense
mil., logist. All measures, other than active air defence, taken to minimize the effectiveness of hostile air action. These measures include deception, dispersion, and the use of protective construction. (FRA)
USA All measures, other than active air defense, taken to minimize the effectiveness of hostile air and missile threats against friendly forces and assets (JP 3-01) see also air defense
passive: 24 phrases in 9 subjects
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