Lightning display
I remember a display at Upper Heyford, the lightning ,took off did a fairly rapid climb, then seemed to dissapear, he returned just subsonic at 90deg from behind spectator lines the whole crowd jumped in the air as one, at the same time he went vertical out of sight, I think that was the whole display as I remember.
That same show the weather changed and I nearly got hit by the real thing whilst stood on top of my landy taking pics.
I think the USAF held it on NATO day or some such, quite a while ago now.