US Testing the World’s Largest $200 Million Drone : Meet the RQ-4 UAV Unipro2013main 4 years ago Northrop Grumman RQ-4 Global Hawk A new documentary video about the US AirForce Northrop Grumman RQ-4 Global Hawk + the General Atomics MQ-9 Reaper and General Atomics MQ-1 Predator Credit to : The Daily Aviation