BolkowJunior,
'Saw it at Cosford - Pity the Sentry couldn't have spotted the idjit in the microlight that spoiled the Arrows display ... (oh not THAT again...) If there were any locals not aware of the airshow like the idjit, it must have ruined their day!!!'
Any fine spotter would know that the Sentry's limitations to turn and burn are FL100 and above in the UK.