I didn't know Fred Trowern personally but, as I happened to come across this Rank video about the tripartite Kestrel Evaluation Squadron a few weeks ago, I thought I would post it so that anyone who might recognize the gentleman could enjoy the memory if he appears in it. Of the 10 aircrew from 3 nations, there were 4 from the RAF - including a wing commander, a squadron leader and a flight lieutenant - so there is a good chance he is in it somewhere. Those must have been interesting and exciting times trying out field operations for the first time along with NATO partners from the US and Germany.