I had a quite different experience. I flew into Richmond International Airport (Byrd Field to the old-timers) and walked past a National Guardsman (it was an E3 or E4, I don't remember, but it wasn't an NCO) with a magazine inserted, weapon off safe, and his finger on the trigger.
About a half-second later, it was fixed.
Had almost the same experience in Chicago OHare about a week after the airports were re-opened. Two very young Air Force airmen walking near the foodcourt, one with weapon slung, the other with weapon in hand, loaded, finger on trigger, off safe. Saw an MP sergeant just past them, and spoke to him about it - sergeant thanked me for observing, and proceeded to walk over and chew out the airman. (Not sure exactly why an Army MP was overseeing Air Force patrol types - I imagine they were all National Guard).