One got in 4s...
http://www.xf90.com/images/R3Y-2/R3Y-2-300.jpg
FOR RELEASE AT 3:00 P.M. (PDT) THURSDAY, SEPT. 6, 1956 Four Navy jet fighters take on fuel from a Convair R3Y-2 "Tradewind" in the first multiple refueling operation ever conducted from a seaplane. The 80-ton "Tradewind" transport carries enough fuel in its wing tanks for eight fighters.
R3Y Tradewind refuelling F9F-8 Cougars Sept 6 1956