[tedmiston]

I don't think you're including current/former defense contractors or those that have worked in military research labs in contractor or civilian roles here, but I believe you'll find a decent amount of those on HN.

In any case, just to add a data point, after working as a defense contractor, a lot of that culture has stuck with me years later especially in terms of security consciousness and inadvertently leaking information signals, especially in this era of more and more publicly accessible social media content.