I can echo the memories of "aux vaches" as I was in the year below Mark.
I remember once hearing a very special engine noise then rushing out to see a Spit in the sky over the school. Just magical!
A few years later on a wet afternoon (during CCF) Mark was showing us 8mm cine film of Ray flying with the Reds. Mark kept trying to freeze the frame so we could see how low his Dad was flying. Each time we only got a glimpse before the film burnt through!
Both knights in the sky!
.. and missed