The latest episode occurred earlier this month. The Washington Post reported on two Secret Service officials who, after celebrating the retirement of a colleague, drove their government vehicle into a security barricade at the White House. That's bad enough, but apparently there was an investigation occurring at the time into a suspicious package that the pair drove through. And now it has been revealed that some of the surveillance tape has been erased. Additionally, apparently uniformed officers wanted to give the agents field sobriety tests, but someone higher up the chain didn't allow that.