05/11/2010 05:12 am ET | Updated May 25, 2011

Response from James Goldston, Executive Producer

Nightline's report on March 8 was focused on the phenomenon of the 9/11 Truth movement -- who they are and why they think what they do. In order to talk to a wide number of people we visited the "Treason in America" conference in Valley Forge, Pennsylvania. Coming as it did on the heels of the shooting at the Pentagon, we asked several people about John Patrick Bedell, and we included in our story their vehement denials that the movement is linked to violence.

Coleen Rowley (who blogged about the conference and Nightline here) was approached for an interview by our producer and she agreed. We included in the story Rowley's view that "the full truth" of what happened on 9/11 is not known, as well as a sequence that made it clear she was put off by the interviewer's persistence.