it did return to base - the base was in Iran. The drone thought it was in Afghanistan, because Iranians spoofed the GPS signal — the only way it knows where it is in 3D space!
Unfortunately its a major screw up: in design of the drone,in operation,and then in not destroying the bird on the ground by the pResident.
Did you read the article I linked? Someone had a virus in the main controller of all of these birds. We have now had one lost and another hijacked in Africa. This type of virus has the ability to record and send all of the codes we use and how we connect to someone. I hope we ground all of these until we understand what was stolen.