I wish I knew the answer. It's staggering, for example, that the B-52 will have gone from the drawing board to being out of service in 80 years. It's absolutely astonishing, with some weapons systems, how long they're in service. Of course, when you have a rate of innovation in IT, where something's obsolete in two years, and yet we have this incredibly long development cycle for certain hardware, we are going to think much more in terms of learning lessons from civilian industry and being able to do much more plug-and-play and life-cycle upgrading.
I don't know the answer. It's getting much, much harder, and it's a real challenge for defence when you have to invest a huge amount of money in certain kit, but it's obsolete almost as soon as you've built it. I don't know what the answer is, but I do think we need to be paying a lot more attention on the civilian side, and doing a lot more to have a much more rapid production life cycle.