This is seriously scary stuff. As I explained in another thread, the total national debt is growing at a rate of about 7-8% per year, while the GDP is only growing at about 3-4% per year. In other words, our debt is growing twice as fast as our ability to pay it off.
What's even scarier is that this is part of a trend that's almost 30 years old. We've been accumulating debt since the mid-seventies. If there's a crash coming in the next five years (and I think there probably is), it's something that's been building for a quarter century, and there's really nothing that can be done to stop it at this point.