Codenamed Looking Glass, it is United States Strategic Command's (USSTRATCOM) Airborne Command Post (ABNCP), designed to take over in case the Global Operations Center (GOC), located at Offutt Air Force Base, Nebraska, is destroyed or incapable of communicating with strategic forces. The term "Looking Glass" is used because the ABNCP "mirrors" the abilities of the US Strategic Command GOC to control nuclear forces.
It's a Boeing E-6 Mercury. According to wiki:
Looking Glass makes you scratch your head.
"Think mirror."
Drops that refer to looking glass.
"Going forward in order to look back"
https://qanon.pub/?q=looking%20glass
Yeah crossing the Atlantic at 20k feet. Kinda wierd. The long way too.
The Looking Glass. Reminds me of "By Dawn's Early Light (1990)" Worth a watch for you younger crewmembers. https://www.imdb.com/title/tt0099197/