So do I.
Here's what Seymour Hersh discovered about terrorist planning and practice prior to 9/11: "Woods's flight was not the only one the F.B.I. looked into after September 11th. The bureau found other evidence that the terrorists from the four different planes had flown together earlier, in various combinations, to "check out flights," as one agent put it. The F.B.I. now thinks that the hijackers flew on perhaps a dozen flights, together and separately, in the summer of 2001."
The New Yorker June 3, 2002