Ok, NOW I suspect Audrey!!!! She was the only one who knew where they were going!!! Unless the terrorists had Powell tailed.
How would it square with Audrey being bad that she was willing [apparently] to gas herself and Dad when they were in captivity? I will grant you it could have been a plot, but it sure didn't seem to be so.
Remember that Driscoll said she was going got send a swat team too. Granted she said it couldn't get there in time, but leaks in CTU are not unknown.
Jack told Driscoll too.