A double whammy has hit the U.S. Postal Service. At the close of business on August 1, 2012, the Postal Service failed to make a $5.5 billion payment owed the U.S. Treasury. And on September 30, 2012, the Postal Service defaulted on another $5.6 billion payment. Will this $11.1 billion default impact postal contractors? No it won’t, according to the agency. But it certainly won’t help those who are doing business with the Postal Service.