Found 2 comments on HN
trevor paglen has written/spoken about this topic extensively, e.g. from 2007 and various talks on youtube, e.g. from 30c3:
smackfu · 2013-12-10 · Original thread
There's a whole book, titled I Could Tell You But Then You Would Have to be Destroyed by Me: Emblems from the Pentagon's Black World:

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