Glad to see more than one person on here has picked up the biggest problems with operating a pure UAV air force. The reliance on long range over the horizon communications, which would require quite a large number of satellites to give the bandwidth required, would required de-confliction with a lot of other data traffic for flight safety reasons and also have to be ECM resistant. This will be very expensive, as worldwide coverage would be required. Also satellites have to be replaced at least every 7 to 10 years or so. Plus you also have to take the effect that bad weather can have on Satcom link’s (just try to watch Sky when it’s raining heavily) in which a UAV would at sometimes have to operate in. Yes, the current systems in place can support the limited numbers of UCAV/UAVs in operational service, but hundreds of them at once???