As many as 20 officers at the federal prison in Manhattan where Jeffrey Epstein killed himself have been subpoenaed.Federal investigators sought the grand jury subpoenas as they try to piece together the events leading up to Epstein's suicide at the Metropolitan Correctional Center earlier this month, according to CNN.Two guardsmen who were tasked with watching Epstein are of particular interest to investigators. The pair, who have been placed on leave, are suspected to have fallen asleep on the job when Epstein died. Attorney General William Barr orderedthe FBI and the Justice Department’s inspector general to investigate both Epstein's Aug. 10 suicide, as well as...