I knew an F-16 driver (a Guard dude), who flew on weekends......He was a 747 captain for his proper job during the week.....On weekends he flew his Block 50 (with a nice 'six-pack') on CAP over NY, NY. As airline captain - in the 4-bar white shirt, was stopped at security and forced to hand his clippers in....Not sure how they could have contributed to the illegal take-over of his aircraft....Hs comments were that if he wanted to bring an airliner down, maybe the six packed Block 50 may have been more productive.
