I'm not quite sure I get your angle but HN users are as welcome from Eglin Air Force Base as from anywhere else, as long as they're using the site as intended. Why shouldn't they be interested in pedestrian footbridges in Minneapolis? (to mention one darling of the moment)
"Eschew flamebait. Avoid generic tangents."
"Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith."
https://news.ycombinator.com/newsguidelines.html