Nine of the 19 hijackers on 9/11 were "flagged" by the computer for one reason or another at airport security checkpoints. All nine were checked and allowed to board the plane. The most recent report from the commission investigating the events of that day included a transcript (and the actual tape) of flight attendant Betty Ong's phone call from doomed Flight 11. The report is compelling. But I want to know what's changed -- are "flagees" still allowed to board after a more "thorough" check? And if so, what's the use of all the new survelliance steps that have been put in place since 9/11? Just wondering.