As a youngster I was at an airshow "with very relaxed views on where a crowd line should be"* on the aforementioned very-close runway, watching a Harrier work its hovering magic less than a 100 metres away.
The noise was such that I now thoroughly believe the Brown Note might well exist, and back then was stunned to be able to imagine I could discern individual organs resonating inside of me. I've never felt such a level of bass since, not even in my later clubbing years, hugging bass bins in sweaty clubs, listening to dub techno or whatever it was that took my fancy twenty years ago... .
SUCH noise. It becomes so loud it's not even noise any more, just pressure waves and complete sensory discombobulation.
* love that, NeedMoreTea!