james mitchell, welcome to hardtalk. thanks for having me on. so, there you were, after more than 20 years in the us air force. you'd retired, you were working as a consultant for the cia, the september 11th attacks happened, you say to the cia, "i want to be part of the solution." why? it was an attack on our homeland. the main thing that influenced me to want to volunteer to help out was the death and destruction. the critical thing, when they asked me if i would be willing to become involved in the interrogation programme, really was the falling man and the people jumping off the building. i thought it was inappropriate and wrong for them to have to choose which way they died as a result of this cowardly attack that was done by these islamists who were trying to destroy our way of life. so you, obviously using your experience as a clinical psychologist working with the american military for many years, could help identify, recommend techniques