New footage released from the US Navy shows an unmanned drone refueling with another fighter jet.
원문출처 : https://www.cnn.com/videos/politics/2021/06/07/mq-25-stingray-tanker-drone-orig-jm.cnn
원문출처 : https://www.cnn.com/videos/politics/2021/06/07/mq-25-stingray-tanker-drone-orig-jm.cnn