I’ve been stopped at airports in the US and abroad a handful of times. It’s always frustrating and a little nerve racking. I’m always polite or try to crack jokes with TSA but damn they’re humorless and sometimes insulting. In Italy I was told my name was on some kind of list. I had 3 security screenings there! Also found out that an SSSS code on your boarding pass means you’re going to get a secondary screening.