Originally posted by LSWONE
reply to post by RichardPrice
I guess that explains why we can't see them flying over our house too then! 
The heat haze might also explain why some craft appear to hover in mid air and hide behind clouds as if playing hide and seek. Oh yeah, it also gives
them the look of having a chevron shape. 
When I lived near an air force base I had military jets fly over my house and I often couldn't see them, but not because they were stealth. It was
because there were things blocking my view, like other houses, trees, etc.
Now if you're standing on a hilltop and there's no buildings or trees, and perfectly clear skies, then you should be able to see what's flying
overhead. Most of us don't have such perfect observing conditions.
When I heard the jets flying overhead but couldn't see them, if I watched and waited long enough I'd eventually see them make a pass that brought
them into view. Part of what made them hard to see was the relatively low altitude of the exercises they were performing, I'm sure it was less than
5000 feet and at times WAY less than that, I think they have to stay above 500 feet and I'm sure they did that but at 600 feet they can sound really
loud and if they are a few streets over when they go by, you can't see them due to the other houses, and trees blocking the view.
