4th post about the SR-71 Blackbird

[petit_robert]

How can 3 posts (4 with this one) about the SR-71 Blackbird make it to HN's main page, on the same day?

[dalke]

Often someone reads article X, finds it interesting, and then reads related article Y. They also find that interesting, so they repost it to HN.

I've seen this many times, and not just on airplanes.