he isjudged by several behavioral experts in the unitedstates to be psychopathically ill as a result of nearlyfour years as a prisoner of war during the vietnamconflict ... . ' '' as johann stammered on , frightened by his ownvoice , the telling words and damning phrases camewith staccato regularity , backed up by hastilycontacted departmental `` sources '' and unnamed , faceless `` authorities . ''