@32: With respect, I think you might not have a very good understanding of how government payments work.
I presume when you say 'fed' you mean the Federal Reserve (http://www.federalreserve.gov/
). They manage the money supply of the United States and are a quasi-independent entity.
The Department of the Treasury (http://www.treasury.gov/
) is a department of the executive branch and writes the checks for the federal government.
The Treasury issues something like 30 million payments per day, I believe. They have contingency plans in place for this kind of situation, despite what you may have heard being scaremongered on Sunday morning talk shows.
A liquidity crisis is very different from a payment delay. Lockheed Martin, for instance, may suffer a liquidity crisis on a corporate level if an anticipated multi-billion-dollar check for bombers gets delayed, but that doesn't affect the money supply or market for government securities.