There are/were also pilots specifically going for that effect...
https://www.youtube.com/watch?v=N6nox5_QStw&t=1082s
This despite the existence of people like Rendlesham's Colonel Halt, and so on, is, indeed, a very interesting military-UAP venn-ecosystem. I think it's a fascinating combination to study.
Military psychology also naturally disincentivizes "looking into things" (see for example Colonel Halt's thoughts on "what to do about it"[1]) and there's a ping-pong false dichotomy that develops: Did we make it or didn't we; Did we cause it or didn't we. It's the perfect recipe for meaningless distraction from very important questions.
This problem also further isolates important aspects of the military role in potentially damming up exploration & science efforts, especially when we examine its comparatively premium level of day-in, day-out access to what are de facto scientifically-capable exploration & discovery tools.
Is it any wonder, in that light, that the accompanying de facto "scientists", i.e. pilots, radar operators, and privileged officers, are seeing extraordinary things? No. And that's a huge opportunity wrapped up in a problem, because the chartering mindset interferes.
1. “There’s no doubt it was something beyond anything we know or understand. […] I have concerns, but I don’t think we can do anything about it. I think this is beyond us.”
“So: Quit worrying about it.” -- From just after the 8m mark in:
https://www.bbc.co.uk/sounds/play/w3cswsp9
(An example of a rather stunning mindset, given the circumstances, and in comparison to the known-reliable mindset of exploratory effort / scientific learning & exploration)