if one of those airliners had been directed not at a building but, say, at a nuclear power plant? The bottom line here is that our energy infrastructure is highly centralized. Electricity production is highly centralized in a couple hundred very large power plants. Our pipeline system is highly centralized. You could take out about 75 percent of the natural gas delivery to the East Coast and never leave Louisiana. It's just one of many examples of how a highly centralized system is very vulnerable to all sorts of mischief. And taking advantage of technological change and more efficient energy sources, which are distributed, will not only produce economic benefits, but will also produce energy security, and indeed national security benefits.