As UAV use grows, bandwidth limits become a concern

The U.S. Air Force is facing a dilemma: The need and utility of unmanned aircraft continues to grow, but the technology could also limit the service’s operational responsiveness. However, while current technologies may be reaching their limits, the Defense Department is also investing in future systems that will vastly increase the capabilities of robot aircraft through increased autonomy.

http://gcn.com/articles/2010/10/19/air-force-ponders-uav-technologies.aspx