I assume the poster is intentionally not revealing their role. While I am also curious, having known people working in the defense industry, it's considered polite to not ask questions to things they aren't offering information about.

Well this is the internet, where we all have no way of sussing out subtle cultural differences between ourselves off a username. I say let the questions be asked, it causes no harm here.

Then it's weird to reveal that kind of connection on HN, a website about sharing links to sites in order to inform and teach the readers.

Then why the hell even discuss it?

The OP did not mention it on purpose. Let it be like that. A lot of people here have signed NDA's.

Just guessing from his/her previous submissions, but maybe something to do with DNS? Root servers? Something similar, maybe.

You can get these for all sorts of stuff. Not just secret squirrel things.

Running a critical network, supporting critical application, leadership of organizations that impact health and safety, key personnel at hospitals, etc.

Huh, I wonder why my comment above was downvoted. It seems like a very strange comment to downvote.