JM 9-21.600
Compliance in providing this information is essential, regardless of whether the prisoner will be housed in a Protective Custody Unit (PCU) or in the general population of a Federal institution, as it will enable BOP to adequately monitor the separation needs of protected prisoner-witnesses.
The information must be provided to BOP at the time witness security is being requested for a prisoner-witness in accordance with the other provisions of this Chapter.
[updated March 2020]