Tracking Enemy Fighters News Today

Can also fly longer, hovering up to a week at a time while current planes land after 30 hours. thats because its powered entirely by lightweight liquid hydrogen fuel with zero pollutants. >> what does it emit? >> water vapor. its hydrogen and oxygen, h2o. >> reporter: within a few years the military could position these planes around the globe, tracking enemy fighters. and instantly supplying communications to american forces on the ground. at home, tracking dangerous storms, western wildfires o...