As one of the oldest federal services, the Postal Service has changed constantly over the centuries. In fact, a lot has happened just in the 21st century. The USPS Office of Inspector General (OIG) has created an online history, starting with the anthrax mailings shortly after 9/11. For details, Federal Drive Host Tom Temin talks with the Research Manager at the OIG-'s Research Insights Solutions Center, John Althen.