Interesting - I was just thinking about those old security films yesterday bearing in mind the Jeremy Corbyn "spying" discussion.
In TBT's reply about the RAF films available - is "Operation Intercept" the fictional film about a Herc being shot down on the way to FI because of all the minor security breaches moulded together with buckets of open-source material?
& IIRC, the Harrier pilot crashing Flight Safety film was something like "Break The Chain"? - long sequence of events from problems at home to fried eggs in the Mess results in a fatality?