ANALYSIS: US Air Force pushes Global Hawk upgrades on 20th anniversary
Flightglobal | March 20, 2018
If an aircraft's first flight is successful, the only excitement is on the ground and never in the air. So it was on 28 February 1998, with the first take-off of the Ryan Aeronautical Global Hawk – a futuristic-looking demonstrator described by three key adjectives: unmanned, jet-powered and high-altitude.