One of 4 airborne command platforms.

All 747’s.

I didn’t know what it was till I looked up its call sign.

https://www.thedrive.com/the-war-zone/e-4b-doomsday-plane-dwarfs-a-kc-46-in-these-stunning-refueling-shots

It was met by 2 tankers out of Bangor ME for refueling.

The 747 is a pig. “During a 5 hour flight it will burn 18000 gallons of fuel.”

A gallon a second.

Mike