UAV Loss
That UAV 'lost' over Iran must really have both sides of this argument in a conundrum. The military argues (the last I heard) that this was NOT a shoot-down, but simply a loss due to C&C or systems failure. Meanwhile, the proponents of commercial UAV use are hoping for some hostile action, as that won't screw up the reliability statistics.
After reading "The Black Swan" (nothing to do with Natalie Portman) by Taleb. I'm not certain I want a statistician deciding when an empty cockpit is safe.