The U.S Supreme Court and BlackBerrys?

I talked to 3 people tonight at a WES reception who provide IT support to the U.S. Supreme Court. When I asked them which Justices used which devices, all they could tell me was "various". For security reasons they couldn't even tell me what carrier they used. Again the answer was various. The most I could get out of them was some used BlackBerrys some used other devices and that they all used whatever carrier was best coverage for where they lived.