Just a couple of months ago, there was a lot of talk about Boeing “making history” with the first demonstration of an unmanned aircraft refueling another aircraft. After the F/A-18 Super Hornet, it was now time for the U.S. Navy’s E-2D Hawkeye command and control aircraft to be refueled by the MQ-25 Stingray drone, marking another milestone for this groundbreaking project.