Langley org. (3)

I believe the answer is:

cia

(Other definitions for cia that I've seen before include "Secret service agency of USA" , "American intelligence organisation" , "American secret service organisation" , "Famous American intelligence agency, advises President" , "American agency concerned with Intelligence" .)

I've seen this clue in The Washington Post, the King Feature Syndicate, the L.A. Times Daily, The Wall Street Journal, the USA Today, the Universal and the LA Times.

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