Related to this, 09-0016 has either just finished, or is near completion of upgrades.Thanks, I see now the date on the photo must be wrong.
Usually one of the "Nightwatch" E-4B NAOC aircraft will also follow the President. They typically don't land, but they occasionally do touch-and-go's in the vicinity.Thanks. I see now the photo was actually taken in 1990 and not 2020 as listed. So these are the SAM45 (45th President) flights you now see following AF1. In addition to the other VC-25 and the B757's mentioned I've also seen the B737's used.