Red Flag is flown in the huge restricted areas around Tonopah (and Area 51), so the F-111s would have had to be inside those areas to be flying supersonic.Yep, -111s would fly supersonic at very low levels and blow out all the windows at the sites. I guess it was more common during "bug trips" out in the boonies. Guys on site loved it, but couldn't keep explaining the damage.