"At the St. Regis Hotel, aides hurriedly approached Tenet's table next to a window overlooking K Street. "Mr. Director, there's a serious problem," one of them said. Through much of the summer, Tenet had grown increasingly troubled by the prospect of a major terrorist attack against the United States. There was too much chatter in the intelligence system and repeated reports of threats were costing him sleep. His friends thought he had become obsessed. Everywhere he went, the message was the same: Something big is coming. But for all his fears, intelligence officials could never pinpoint when or where an attack might hit. "This has bin Laden all over it," Tenet said to Boren. "I've got to go." He had another reaction in the first few minutes, one that raised the possibility that the FBI and the CIA had not done all that they could to prevent the terrorist attacks from taking place. "I wonder," Tenet was overheard to say, "if it has anything to do with this guy taking pilot training." He was referring to Zacarias Moussaoui, who had been detained in August after attracting suspicion when he sought training at a Minnesota flight school.