FAA

I can't get into edit the article so I'll supplement it. Zorro "memed" the existence of two planes on radar travelling on a "parallel path" confirmed by FAA Radar and Norad. One was mimicking the transponder of Flight 93, the other (the Global Hawk) was shadowing so close to the other Craft and so low to the ground, it thought it was evading radar. In fact, until I listened to Mineta's comments, I was sure it was an "echo" and nothing more.