Free hostage John McCarthy speaks to Air Force personnel who helped him after his release

The transcript describes a person receiving a cherished picture, expressing gratitude to Air Force personnel, and experiencing technical difficulties during a speech. The person was thrilled to receive the picture, which they had only heard about on shortwave radio. They then prepared to thank and bid farewell to the Air Force personnel who had supported them. Meanwhile, a technical issue with the sound feed prevented another person from hearing a speech, leading to a discussion about its content.

What issue did the speaker face during Alistair's speech?

What was the duration of the speech Alistair made?