drones militares : Northrop Grumman releases images of X-47Bs first autonomous aerial refueling . [1200X900]
![Northrop Grumman releases images of X-47Bs first autonomous aerial refueling . [1200X900]](https://dronesrate.com/wp-content/uploads/2021/07/26-drones-militares-Northrop-Grumman-releases-images-of.jpg "Northrop Grumman releases images of X-47Bs first autonomous aerial refueling . [1200X900]")
