MASCOUTAH, Ill. (Aug. 18, 2021) An MQ-25 Stingray unmanned aerial vehicle refuels an E-2D Advanced Hawkeye aircraft over MidAmerica Airport in Mascoutah, Ill., Aug. 18, 2021. This test marks the second successful refueling flight for the MQ-25 program. The six-hour flight, conducted by Air Test and Evaluation Squadron (VX) 20, tested the Boeing-owned MQ-25 test asset's fuel transfer, formation evaluations, wake surveys, drogue tracking and plugs at 220 knots calibrated airspeed at 10,000 feet. (U.S. Navy photo courtesy of Boeing)