https://aviationweek.com/x-47b-conducts-first-ever-uav-flight-refueling
X-47B Conducts First-Ever UAV In-Flight Refueling | Aviation Week
The U.S. Navy/Northrop Grumman X-47B achieved a major milestone for aviation on April 22 with the first-ever autonomous aerial refueling of an unmanned system.
in flight refuelingx 47bfirst everconducts
https://www.dvidshub.net/image/5537910/acting-secretary-defense-observes-flight-refueling
DVIDS - Images - Acting Secretary of Defense Observes In-Flight Refueling [Image 29 of 29]
Acting U.S. Secretary of Defense Mark T. Esper observes an in-flight refueling on an E-4B aircraft, en route from Brussels, Belgium, to Joint Base Andrews,...
secretary of defensein flight refueling