In 1986 I was taking my third or fourth solo airplane flight from HPN when I was advised by the tower to stay clear of HPN airspace because Air Force One was about to land. I bored small circles in the sky in my little Cessna 172 while waiting for about an hour until President Reagan had cleared the area. Air Force One (that day a Gulfstream IV, if I recall) was sitting on the ramp as I taxied back to Panorama.

Every time AF1 gets anywhere near traffic grinds to a halt.