Planefag update:

THREE E6-B Mercury aircraft are up right now.

I read in a bread about a month ago that over 2 was highly unusual. I've only ever seen 2 up at once, and even that is fairly rare.

Significant?

https://en.wikipedia.org/wiki/Boeing_E-6_Mercury

>>4701110

Interesting…

The one without a callsign abruptly went from 26k ft to GND, but I didn't see any vertical speed change indicating a descent. If my viewer isn't buggin out, I agree - shift change

>>4701390

https://global.adsbexchange.com/VirtualRadar/desktop.html#