They sure do rumble. One flew low over Denver a couple of years ago, quite close (presumably legally) to the ground near Union Station. RRRRUMMMMMBLLLLLE. I was struck with how slow the thing seemed to be, just sort of floating by near Union Station.
On occasion, they have one flying tours out of Jeffco Airport (or whatever the new name is) during air shows and when I hear it, I leap off my couch and hobble to the balcony to see it. Same thing, rumble-wise, and it seems like it takes a long time to fly its own length. Must be some kind of optical illusion due to the fuselage thickness or something.
Terry, 230RN
ETA: Sort of like this at 3:57, coming off the deck of the carrier. Of course, the carrier is moving in the frame, too, but that' what it looked like to me.
https://youtu.be/M-uSs0AagBc