The closest Air Force base here is a long way off, but its training flights often come over this ranchland. Two small mom 'n' pop jetlets, one following the other, zip from NW to SE, following quite precisely the wet weather creek which bisects the lower pasture, sometimes (rarely) following the fenceline.
They used to fly over on Tuesdays. Then they switched to Thursday or Fridays. Never on weekends. Never on Sundays! In the run-up to the invasion of Iraq there were more flights and, by gosh, maybe a couple of weeks before the invasion, two training flights during a weekend -- on a Saturday.
Since then there have been many fewer flights. I'd half forgotten about them until I heard them roar over about an hour ago, on a Sunday.
Hmmm. What should we be expecting this time?