How about this? A pair of NASA operated RQ-4A Global Hawks during in flight refueling. I think this was accomplished in 2013. The XV-47B and the RQ4 Global Hawk are Northrop Grumman products. The Global Hawk was developed by Teledyne Ryan in 1995, and won the Tier II competitive contract award. Northrop Grumman bought Teledyne Ryan in 1999, and manufactures them at Palmdale Ca.
Last edited by Harley Condra; 04-26-2015 at 03:15 AM.