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penetration aid

noun, Military.
1.
a device or tactic, as the use of chaff or decoys or the maintaining of a low flight level, that helps an aircraft or missile to enter hostile air space.
Origin of penetration aid
1965-1970
First recorded in 1965-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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13
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