[2] USP Allenwood has four two-level housing units each of which consists of four 16-cell ranges around a central dayroom where inmates can congregate during the times they are allowed outside their cells.

Inmates work in a UNICOR upholstery factory and institutional maintenance jobs such as food service and building repair.

[6] The death sentence was vacated in 2006 after a federal judge found that prosecutors withheld evidence during the penalty phase that would have bolstered Hammer's claim that he and Marti were having consensual sex.

In July 2014, another federal judge concurred, ruling that a life sentence was appropriate based upon multiple circumstances, including Hammer's acceptance of responsibility and remorsefulness, his extended family history of dysfunction, abuse and mental illness, his mental and emotional impairments and his self-improvement, specifically citing Hammer's writing to at-risk children and counseling them against engaging in criminal conduct.

On December 7, 2020, two correctional officers were injured after one was stabbed in the neck and eye by Abdulrahman el Bahnasawy (75868-054), a Canadian convicted of terrorism-related offenses in 2016.