The FCC requires local thug departments to sign a [ nondisclosure agreement with the FBI ]( https://muckrock.s3.amazonaws.com/foia_files/nda_redacted.pdf ) , as an excuse to keep the use of cell phone snooping devices secret. The text of the NDA itself is also secret. Nice of them to at least admit that the contract is an NDA.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#30_September_2014_%28NDA_for_cell_phone_snooping_devices%29