I could give other examples, but if Khalid Sheikh Mohammed's 1993 WTC bombing was not enough of a warning that that complex was a target, I don't know what woul

I could give other examples, but if Khalid Sheikh Mohammed's 1993 WTC bombing was not enough of a warning that that complex was a target, I don't know what would be. Mohammed succeeded on his second try. John P. O'Neill of the FBI headed that investigation and he left the FBI and was head of WTC security on the day of the attack. He told people he thought he expected another attempt.