Anyone remember Fred Perry? Tasked to fly a general to take a parade in a Gz. Arrived at HLS which was the unit parade square. Square contained the RTR regt the general was going to inspect. Fred decided to land in a small square of 4 tennis courts ( no fencing between courts only round the perimeter) next to the square. General got out, Fred lifted to refuel at a nearby airfield. You guessed it, tennis court locked...................... True story.