The reviewing officer for our graduation at Henlow was the Queen Mother and inevitably the latter part of the course was sacrificed to practise parades which we were endless. Unbeknown to us there was a large formation flypast planned (15 ship I think) and as part of the planning one of the Regt officers was monitoring each practise to get a feel for the timings. It would seem that our practises were getting quicker and quicker that is until we did the real thing when we were slower than on any previous occasion. This caused great confusion and resulted in a large formation orbiting somewhere in the vicinity trying to lose time and reschedule the arrival time to coincide with our much delayed marchpast. I have never found out the details of what happened and it would be interesting to hear from anyone who took part in this flypast.