RQ-4A Global Hawk is an United States Air Force unmanned aerial vehicle (UAV) built by Northrop-Grumman
It can stay aloft for up to 24 hours and has a range of 750 km from it is command post. It fly is at an altitude 7-8000 meters.
It has a complete set of radars and electronic survelance equipment.
This plane has become famous for it is use in Afghanistan.
Its first flight was on Feb. 28, 1998 and during a May 10, 2001 flight (for a US-Australian wargame), the vehicle flew for 25.2 hours and reached a maximum altitude of 63,400 feet. | 
