I have recently re read "Their Greatest Disgrace": as an Air Test Engineer at Odiham I flew with all of the crew of ZD576 at different times and played rugby with one of them a good deal. I find it so hard to understand why the MOD and lots of governments seem to continually want to denigrate them instead of just putting their hands up and doing what we are all taught from an early age, admitting that they were wrong. I do hope that they do not destry any documentation that still survives, out of sight is certainly not out of mind.