https://ift.tt/wEcZxH Global Hawk, which is unmanned, can travel halfway around the world on one tank of fuel.
from BBC News - World https://ift.tt/3am9P4M
https://ift.tt/eA8V8J
from BBC News - World https://ift.tt/3am9P4M
https://ift.tt/eA8V8J