In the rehearsal and discussion sessions at Langley, the give and take was mostly the Secretary of State trying to eliminate unsubstantiated and/or unhelpful material and others from the White House trying to keep that material in, or add more. One such incident occurred several times and the final time it occurred provided an example of the Secretary's growing frustration. Repeatedly, the OVP or NCS staff personnel tried to insert into the presentation the alleged meeting in Prague between al-Qaeda operative and 9/11 hijacker Mohamed Atta and Iraqi intelligence personnel. Repeatedly, Secretary Powell eliminated it based on the DCI's refusal to corroborate it. Finally, at one of the last Langley rehearsals, Secretary Powell was stopped in mid-presentation by deputy national security advisor Steve Hadley and asked what had happened to the paragraph describing the meeting in Prague. Secretary Powell fixed Hadley with a firm stare and said with some pique, "We took it out, Steve — and it’s staying out."