Massive experimental drone takes to skies above Edwards AFB

Massive experimental drone takes to skies above Edwards AFB: "A massive experimental drone designed by Boeing Co. engineers to fly for up to four days at a time completed its first test flight above the Mojave Desert at Edwards Air Force Base. The drone, called Phantom Eye, and its hydrogen-fueled propulsion system have the potential to vastly expand the reach of military spy craft. The longest that reconnaissance planes can stay in the air now is about 30 hours."