Guzman, who pleaded not guilty on Friday to charges he ran one of the world's biggest drug-trafficking operations, can expect to be kept in a special unit inside the drab 12-story Metropolitan Correctional Center, where such other high-profile, high-risk inmates as Gambino crime family boss John Gotti and several former close associates of Osama bin Laden awaited trial. To reduce the risk that a wealthy inmate such as Guzman might try to corrupt jail staff, the number of jailers who have access to him will likely be limited and each will undergo extra screenings by top jail officials, Linaweaver said. The special unit's strict confinement drew criticism in 2011 from the human rights group Amnesty International, which expressed concern that the sparse cells, exercise restrictions and isolation "amount to cruel, inhuman or degrading treatment." The jail saw an audacious escape attempt in 1982, when two armed people in a hijacked sightseeing helicopter tried to pluck an inmate off a roof.