U.S. officials say Hussein loyalists do not require high-technology eavesdropping devices to gather substantial amounts of information on the activities of American officials .
U.S. officials say operatives loyal to the ousted Saddam government do not require hightechnology eavesdropping devices to gather substantial amounts of information on the activities of American officials .
Stack said he did no work for Triumph until 1999 , when a grand jury began investigating Silvester .