Coff, someone has been clever on Photoshop for that one I would suggest!
The Pax jets usually tank from a KC-130 but have tested both KC-10 and KC-135.
As for the issue with CF-3, the aircraft at Pax are considerably more instrumented than test jets in the past. Better to find problems and deal with them early than have nose gear oleo failures after 50 traps or so in service.