My office window has a nice view of the Tunnel Site.
Happy memories of working with the Radar Research Squadron in the 1980s (I still have my personalised Squadron mug). The father of one of my colleagues was a pilot there.
Also enjoyed seeing the exotic aircraft that visited there - Concorde and the TR-1 to name but two, as well as the research fleet. I never saw a 747 there but BA DC-10s were regular visitors for crew training. Plus, of course, Cranfield Radar (of hallowed memory) operated from a console in the Thurleigh approach room.