I had 3 A-10 Thunderbolts fly over the me on the highway a few years back. They were definately under 1000 feet and it was an awesome sight!
I have a place on the White Oak River near Swansboro, NC. It is common when I am there. The "Hogs" come over at treetop level, and scream as they go past in training. Cherry Point and New River are separated by me... But, you don't hear them coming!