martes, 17 de mayo de 2016

Proteus approaches a Global Hawk for Aerial Refueling







http://www.defenceaviation.com/2011/03/northrop-grumman-demonstrates-unmanned-aerial-vehicle-air-to-air-refueling.html?utm_content=buffer338e0&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

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