Through you, Mr. Chair, all employees are, again, mandatorily screened by our departmental security branch, and they would be escorted, so they have no independence or opportunities. Our radio service technicians escort them to do the work, and then review the work. There may be some troubleshooting, etc.
Again, that's something we consistently monitor. There's no independent access to any of our radio sites—to any of our facilities, in fact—and there's stringency in our background security checks.