Yonks ago I was reposing in my back yard in darkest South Lincolnshire on a hot, sticky summer lunchtime. A bright sun but very very hazy, GRN vis at best but just thin cirrus overhead. To the east of me slowly increasing in sound was that of a Merlin; one of the BBMF cabs out of Coningsby on an airtest, probably. For the next 20 mins he aero'd about, I never once saw him. By the end of the twenty mins I was losing it big style, I don't mind admitting that some dust got in my eyes. Quite alot, in fact. Never saw whatever it was but to my dyeing days I will remember the glare of the sun, the haze, the dust and twenty minutes of a lightly thrashed Rolls Royce engine. You had to be there, I'm glad I was.