Well it was a new one on me.

I knew that some Boeing aircraft were released as "Combo's". I had not seen one done like that (the whole aircraft). With that being said, when I went to the Avalon Air Show last year, there was a DC10 that the US Navy was using it for refueling trials (I can't find my pics at the moment). It still had all the passenger windows in it, but it had a what looked like a huge bladder that covered the windows.  doubt that it really was a bladder and they wouldn't let me in so I could take a good look. Of course.

Mark