Aircraft
UCAV gains apparent but debate rages on cost, uses
Having led the way with unmanned combat air vehicle (UCAV) concept demonstrations, the U.S.

Having led the way with unmanned combat air vehicle (UCAV) concept demonstrations, the U.S. Air Force seems to be having second thoughts. Meanwhile, Europe is playing catch-up, but with three entirely separate UCAV demonstrators: the pan-European Neuron, the BAE Raven and the EADS Barracuda. Good technical progress is apparent, but debates about requirements, operational utility and cost are ongoing.