If you're traveling overseas, get ready for an eye-opener. I just hit Sarajevo tonight; I have a little clean-up to do over the next few weeks before I am completely retired.
If you're an American going to the European Union, you can't go unless you have a permanent resident card or a business visa. Bosnia is not in the EU, but I have a resident card and proper visa. Austrian Airlines suddenly suspended flights as of today to all of the Western Balkans; we knew that was coming, so I took Turkish Air to Istanbul, then to Sarajevo.
If you walk into an airport anywhere, including the US, without a mask, you'll be immediately stopped and provided one that you have to put on or be escorted out. American Airlines requires you wear a mask on their planes unless eating or drinking; they'll give you bottled water and a prepackaged snack if you want - I saw no meals on the two domestic flights I took. If you refuse to wear a mask before the flight starts, they'll boot you out; if you take it off and won't put it back on during the flight, they won't let on another American flight. Turkish Air had the same rules.
Lines to get boarding passes at any carrier sending Americans toward Europe are easily an hour long, and you have to have your credentials in hand. They take your temperature with a cool-looking gun before you get to the counter - too hot and you're out of the line.
After security and before boarding, they'll take your temp again.
When I changed planes in Istanbul, they took my temp one more time. At the Sarajevo Airport, you are zipped through immigration if your papers are right, then are allowed to baggage claim, then you go out! No greeters are allowed inside, and even outside they have to be 1.5 meters apart.
At Istanbul and Sarajevo, they had painted warnings/decals on the floor to show you proper social distancing; they were on every 3rd step on the escalators as well.
On the planes, flight crew do their best to keep people boarding or leaving socially distanced, but it's really difficult.
In town in Sarajevo, people outside are staying well apart, people inside nearly all wear masks unless eating. Our deaths per million are over 425; in Bosnia, they are under 80 per million.
Just passing this along - now you know.