Only apples to weapons training during military service AND/OR having worked in special lab or unit (the "Red" armies of either Russia, or China come into mind here.) manufacturing nuclear or chemical or biological weapons or testing them. Does not ask about ordinary military service in any of the "Red" armies. Also does not ask you to answer "yes" if you are from say Yemen or anywhere from within the former Soviet empire or China and you happen to have a degree in chemistry or biology.
As for any "examples or precedents", that's too much of an ask for a free consultation on the Internet. You'll have to research that yourself.
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If you happen to answer yes, you would possibly have to explain in more detail, provide additional documents, or, in some cases, need a waiver to cure inadmissibility.
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Mr. Behar is quite correct. Only applies to certain forms of military training.
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