However, the long part of the process is waiting for approval and getting your security interview. Do be aware that application approval for this frequent traveler program can take up to 4-6 weeks. Again, remember that you will not be able to communicate with anyone working on your application.
Instead, the task of safeguarding the nine justices falls to the Supreme Court Police, a 125-person force that's also charged with securing the court building and grounds. Though the court has long had security guards, a separate police department wasn't formally created by Congress until 1949.
The terms of Supreme Court justices are not specified, which means they can serve until they retire. The Constitution states that justices serve during good behavior, but they may be removed through impeachment.