What the heck are Homeland Security and the TSA doing with the money they get? They obviously aren't thinking ahead. They're only responding (late) to whatever threat gets uncovered. Why on earth don't they have one or two teenage boys sitting around coming up with ways that they could blow shit up? Isn't that what teenage boys do? Or they could order a copy of the Anarchists Cookbook. Then they could have a couple of adults determine whether it's reasonable or feasible and take precautions.
But at that point, I strongly suspect that they'd discover that reasonable precautions are to xray stuff and maybe have a bomb sniffing dog and that's it. And that would render them obsolete. And we certainly can't have that.