list, however, was used to deny U.S. entry to Egyptian Omar Ahmed Ali, who in 2005 committed a suicide bombing in Qatar, killing one and injuring 12 others, said screening center spokesman Chad Kolton. The screening center was created in 2003 to fill domestic security gaps exposed by 9/11. Two of the hijackers, Nawaf Alhazmi and Khalid Almihdhar, were sought by federal investigators for more than a year before the attacks. Both went undetected, even though Oklahoma authorities had stopped Alhazmi and cited him for speeding five months before the attacks in 2001. Boyle said a basic "unfamiliarity with the notification system and an unfamiliarity with the benefits of reporting" the contacts have been the most common explanations for not acting on the alerts. "I would like tothink that (compliance) would be higher," said Ronald Ruecker, president of the International Association of Chiefs of Police, the nation's largest organization of law enforcement officials. Ruecker, public safety director in Sherwood, Ore., said the lack of reporting could be due to the "cultural shift" in law enforcement's post-Sept. 11 emphasis on fighting terrorism. He said that focus hasn't completely resonated in police agencies. "It is a culture not easily changed," Ruecker said. Darrel Stephens, former president of the Major Cities Chiefs Association, said the compliance rate suggests that some officers intentionally choose not to contact federal authorities. Others may not respond because of workload pressures and the time required to contact the center, he said. Guidelines: You share in the USA TODAY community, so please keep your