Once a passenger jet, the mysterious plane has been spotted taking to the skies above Dayton, Ohio.

Both aircraft offer impressive capabilities.

The new aircraft in the Boeing VC-25B Bridge program completed modifications and flight testing and is now being painting red ...

The U.S. Air Force has finished modifying and testing a Boeing 747 jet donated by Qatar for temporary use as Air Force One ...

Boeing 747 aircraft are still being sought after as passenger and freighter aircraft, as well as backups for Air Force One, ...