I came back from Eastern Europe just a few days ago. I had no worries where I was. But International airlines and airports scared me. Anyone can be, and usually is, from anyplace in the world, and within a few hours. I met a couple from Eastern Africa in a less traveled Eastern European Airport lounge. Not what I would have expected. Then there was the mass of people at JFK Airport Customs and Immigration, all lined up in one huge room waiting to get into the US. Anything airborne and we all can and will take it with us, wherever we go.

IMHO, the genie is out of the bottle.
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"Better is the enemy of good enough."