he can ask to be placed in protective custody. it is extreme because it is essentially solitary confinement for his own protection.
https://www.inmateaid.com/ask-the-inmate/my-boyfriend-67-yrs-old-and-in-poor-health-is-being-extorted-and-physically-threatened-he-wants-to-stand-up-to-them-but-he-can-barely-walk-let-alone-protect-himself-any-advice-is-appreciated-nbsp#answer
Accepted Answer Date Created: December 23,2020