'Shown live', lol
The Alyea film was dropped out of the building by him and taken to the WFAA-TV studio where it was immediately developed. It was then shown live on WFAA-TV and narrated by Jay Watson and Bert Shipp.
If you watch the video you can hear Schipp narrate the film as it's shown LIVE on television. Below is Watson on the left and Shipp on the right, shown as the film began to play. All of this is in the video.
My mistake; wrong link. The film with their narration is here (go to the 3:28 mark):