Picture this, very bright moonlight, nil wind, in fact a night as peaceful as John Prescotts concience, sounds of rotors approaching fast, powered by a turbine, the As350 of my local constabulary passes right over my house, and Bingo exactly 6 counted seconds the noise has gone, total footprint about 12 to 13 seconds, to those of you who know these things, would this point to a very fast and low alt journey, or a new sort of "Whisper mode" to sneak up on Billy Burglar, I must admit to being a little puzzelled?
