I missed that — yes, sometimes someone says "anything in your pockets?" or similar, and someone else beckons me to walk through the metal detector. If I'm 'randomly' checked of course I have to speak.

I found American airports less hands-off (especially security, which is considerably more hands-on than I'm used to, "Sir, I will now rub your balls"). But then I'm almost always flying internationally out of the USA, so it's not a fair comparison against domestic (Schengen) flights in Europe.