I remember reading of a NG 'flying wing' stealthbomber approaching Farnborough air field eight or so years ago presenting a sore-thumb target to Rapier FSC's I/R tracker unit at 18kms.
Similar excuse given by NG at the time. Made the BBC news and front page of the Daily Mail. Headline paraphrased as 'Steathy my ar$e!' or similar.
'They don't like it up 'em Captain Mainwaring'
Reminds me of Mr Invisible in the Mysterymen a la, 'I only become invisible if you shut your eyes - otherwise it doesn't work!