Not even high-level government agencies can get the job right all the time. Case in point: the Secret Service said on Friday that it is currently under investigation by the Department of Homeland Security for two lost files. No, they weren't stolen by elite foreign hackers or anything equally glamorous. They disappeared somewhere on Washington's metro system. In 2008 a contract employee who was transferring two computer tapes between facilities dropped or left them somewhere in the subway system. Although they were protected by several layers of security (this is the Secret Service we're talking about), the incident prompted some new transportation procedures.