For the past three days there have been military planes flying over the city of Santiago during the middle of the day: right around our lunch time.
It reminds me of the weeks after the World Trade Center attacks: military jets flying back and forth over Chattanooga to try to demonstrate ... something.
It actually became quite annoying -- especially the frequent sonic booms at close range -- and then finally went away altogether after there was a massive sonic boom over the city during "church hour" (between 11AM and noon on a Sunday).
The recent Chilean activity is nothing like that level of aggressiveness (no sonic booms or "maneuvers", just a one-time fly-over of a group of planes), but is still odd. Flying any plane over a crowded city seems questionable. Is the Chilean government and/or military trying to demonstrate something?