The worst case scenario is if the Dollar, Bond, and Equities start going down together as the world repudiates the US Dollar Reserve Currency and Credit Bubble.
This is not a probable scenario.
The last time it happened was in 1933 in the trough of the Great Depression.
But we may have the opportunity to see something as once-in-a-lifetime and memorable as John Law's Banque Générale and the Mississipi Bubble.
Let's hope the Federal Reserve can reach deeper in its pockets for a better class of tricks than just front running the dollar and the bonds until they fall over.
Certainly anything is possible, but it does appear as though the US Long Bond is hitting a 'high note' of improbable valuation unless the world accepts a single currency dollar regime.
"Some people see God as they see a cow, and love Him as they love a cow — for the milk and cheese, and the profit it brings. This is how it is with people who love God for the sake of worldly possessions or inward comfort. They do not truly love God when they love Him for their own advantage. The eye through which I see God is the same eye through which God sees me; my eye and God's eye are one eye — one seeing, one knowing, one love.”
Meister Eckhart, Predigten und Traktate