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 .
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 .
Southwest said it had already inspected its fleet of 385 aircraft and found no additional suspicious items .