Not your average airliners..
Just a few odd variations on the Jumbo theme; the E-4B Nightwatch:
http://i13.photobucket.com/albums/a2...sim/Jumbo2.jpg
The SOFIA, or Stratospheric Observatory For Infrared Astronomy:
http://i13.photobucket.com/albums/a2...sim/Jumbo1.jpg
And the YAL-1A, better known as the Airborne laser:
http://i13.photobucket.com/albums/a2...sim/Jumbo5.jpg
http://i13.photobucket.com/albums/a2...sim/Jumbo4.jpg
Ready, aim, fire! Darth Vader would have loved this! :d
http://i13.photobucket.com/albums/a2...sim/Jumbo3.jpg
Get 'em at the Project Open Sky website.
:)