Despite warnings , suspect 's visa was not renewed . That information was sent in a routine , unclassified cable known as a visa VIPER to the National Counterterrorism Center in Washington . Tip from suspect 's passport went to National Intelligence Center . Was put on TIDE list , along with several other possibly suspicious people . To take matters further , there has to be a ` ` reasonable suspicion '' of a link to terrorism .
Despite warnings , suspect 's visa was not renewed . Tip from suspect 's passport went to National Intelligence Center . Was put on TIDE list , along with several other possibly suspicious people . To take matters further , there has to be a ` ` reasonable suspicion '' of a link to terrorism .