Marine Corps Brig , Quantico Marine Corps Brig , Quantico was a Level I facility military prison operated at Marine Corps Base Quantico in Quantico , Virginia from 1972 until December 31 , 2011 . The building was located in eastern Stafford County , south of the base headquarters . By definition , Level I means that it " provide [ d ] pretrial and short - term posttrial confinement support . Level I confinement facilities are generally limited to 90 or fewer days . When necessary , Level I facilities may confine prisoners more than 90 days , but not to exceed 1 year . " Unlike Regional corrections facilities , counseling support for military prisoners is limited . In practice , the facility could house approximately 120 - 150 inmates in living arrangements ranging from squadbays ( for the general population ) to Special Quarters 2 , which is effectively solitary confinement . The facility was used primarily as a place to temporarily harbor inmates awaiting transfer to longer term facilities , such as the United States Disciplinary Barracks at Fort Leavenworth , Kansas . Security included a single chain - link fence about 20 feet high with razor wire , cameras , and guards . Guards were divided into three sections , composed of United States Navy and United States Marine Corps personnel in ranks from E - 1 to E - 6 / 7 . In addition to security personnel , the Brig had a small administration staff including medical personnel and civilian cooks who worked with inmates to prepare meals . The Brig also offered a small library and chapel for weekly services . The Pretrial Confinement Facility at MCB Quantico was permanently closed on December 31 , 2011 , as part of cost - cutting measures recommended by the 2005 Base Realignment and Closure Commission . Prisoners awaiting trial will be held instead at a regional military correctional facility in Chesapeake , Virginia . Notable prisoners . Over the years , there were some prominent inmates at the Brig , including John Hinckley , Jr . , a would - be presidential assassin , Clayton J . Lonetree , the Marine Security Guard who provided classified information to the KGB while stationed at the U . S . Embassy , Moscow from 1984 to 1986 , and Rayful Edmond , largely credited with introducing crack cocaine into the Washington , D . C . , area . After Chelsea Manning ( who was formerly known as Bradley , and who was convicted in 2013 of leaking classified information to WikiLeaks , including the 250 , 000 diplomatic cables , video of the July 12 , 2007 Baghdad airstrike , and footage of the Granai airstrike ) was transferred to Quantico in July 2010 , numerous allegations of abuse arose , including isolation , the use of maximum - security custody and suicide watch for punitive reasons , and other non - violent harassment by the guards , such as forced nudity . Though military officials deny abuse ( including an incident where State Department spokesman Philip J . Crowley was forced to resign ) , the hacker group Anonymous has threatened to disrupt activities at Quantico by cyber - attacking communications , exposing private information about personnel , and other harassment . Dubbed " Operation Bradical " , Spokesperson Barrett Brown stated that this would be in direct response for the alleged mistreatment . Military spokespesons responded that the threat was referred to law enforcement and counterterrorism officials for investigation .