today the weather was great so I spent some time spotting with my 55-250 lens.
I have seen 4 contrails from an aircraft flying eastbound over Rome and tried to take some pics of what looks like a KC-135 (check the black nose)



At the beginning I thought it could be an A340, but I checked on Flightradar24 if it was trackable and it wasn't.
Any idea?
BTW, here are today's best shots of the only two aircrafts I managed to spot while landing at Rome-CIA (cropped)

