Following up to the question on how rare is to have 9 fighters at Souda, I would comment that the actual rare thing was to have 6 tankers at Souda. And I will have another question: How often you see the GOLD KC-10's being all airborn during the night under a QUID callsign? Not difficult to find relations with what happened last night.
In any case, just for the records, RadarBox application is full of QUID tankers in Eastern Mediterranean. Several of them were the ones spotted at Souda. With very low visibility at Souda right now, I don't know where they will end up landing.
One tanker is Quid 290 arrival around 00.00 04.13/14 at Chania from Al Udeid.
It flew later from 05.30 to 12.18 in tanker position between Crete and Cyprus in 3 positions.
Later it flew later from Chania to Moron and back.
Try to search 86-0027 in Yahoo for example.
86-0027 KC-10 from Al Udeid around zero hour and later
2018.04.14:05.30 Quid 290 Chania dep 12.18 Chania arr
04.15:10.12 Quid 290 Chania dep 04.15:12.42 Moron arr