Hayes Aircraft Corp. converted 136 surplus B-50Ds to KB-50 tankers, deliveries of the improved jet-assisted KB-50J version beginning in 1958. Replaced by KC-135s in the mid-60s, a few were still available in 1965 for use in SE Asia for emergency refuelling of fighters over hostile territory. Framed by WB-50D 0-90310, this one was soon after painted with fake serial 0-80114 and was moved to the Air Park at McDill AFB, FL in 1996