When I went to Pocono for the race 2 weeks ago, they had a KC 135 (?) tanker do the flyover..When I first saw it, it was about eye level with me..I was up near the top of the grandstands..as it flew up the front stretch of the track it was no higher than 100 ft ..there was little sound, so it seemed until it passed by me at the start finish line..Everything was drowned out after that till it made a high banked turn and flew off..man it was freakin cool..The C5s they have at Stewart airport in NY make a hell of a racket when they takeoff too..lol..A freind of mine is a loadmaster on one and got me a ride once..it was cool..